/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:31:34,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:31:34,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:31:34,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:31:34,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:31:34,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:31:34,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:31:34,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:31:34,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:31:34,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:31:34,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:31:34,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:31:34,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:31:34,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:31:34,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:31:34,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:31:34,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:31:34,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:31:34,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:31:34,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:31:34,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:31:34,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:31:34,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:31:34,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:31:34,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:31:35,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:31:35,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:31:35,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:31:35,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:31:35,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:31:35,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:31:35,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:31:35,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:31:35,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:31:35,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:31:35,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:31:35,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:31:35,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:31:35,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:31:35,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:31:35,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:31:35,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:31:35,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:31:35,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:31:35,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:31:35,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:31:35,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:31:35,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:31:35,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:31:35,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:31:35,025 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:31:35,025 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:31:35,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:31:35,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:31:35,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:31:35,343 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:31:35,343 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:31:35,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_3.c [2021-05-06 06:31:35,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39db039e4/e16f37a5e0de472aa128d3d972fd27e5/FLAGcbeeaab28 [2021-05-06 06:31:35,847 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:31:35,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_3.c [2021-05-06 06:31:35,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39db039e4/e16f37a5e0de472aa128d3d972fd27e5/FLAGcbeeaab28 [2021-05-06 06:31:35,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39db039e4/e16f37a5e0de472aa128d3d972fd27e5 [2021-05-06 06:31:35,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:31:35,883 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:31:35,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:31:35,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:31:35,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:31:35,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:31:35" (1/1) ... [2021-05-06 06:31:35,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c558ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:35, skipping insertion in model container [2021-05-06 06:31:35,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:31:35" (1/1) ... [2021-05-06 06:31:35,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:31:35,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:31:36,047 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_3.c[318,331] [2021-05-06 06:31:36,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:31:36,067 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:31:36,077 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_3.c[318,331] [2021-05-06 06:31:36,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:31:36,092 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:31:36,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:36 WrapperNode [2021-05-06 06:31:36,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:31:36,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:31:36,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:31:36,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:31:36,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:36" (1/1) ... [2021-05-06 06:31:36,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:36" (1/1) ... [2021-05-06 06:31:36,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:36" (1/1) ... [2021-05-06 06:31:36,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:36" (1/1) ... [2021-05-06 06:31:36,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:36" (1/1) ... [2021-05-06 06:31:36,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:36" (1/1) ... [2021-05-06 06:31:36,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:36" (1/1) ... [2021-05-06 06:31:36,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:31:36,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:31:36,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:31:36,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:31:36,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:31:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:31:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:31:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:31:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:31:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:31:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:31:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:31:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:31:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:31:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:31:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:31:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:31:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:31:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:31:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:31:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:31:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:31:36,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:31:36,558 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 06:31:36,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:31:36 BoogieIcfgContainer [2021-05-06 06:31:36,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:31:36,560 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:31:36,560 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:31:36,561 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:31:36,563 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:31:36" (1/1) ... [2021-05-06 06:31:36,711 WARN L240 tifierPushTermWalker]: treesize reduction 5, result has 92.5 percent of original size [2021-05-06 06:31:36,849 WARN L245 tifierPushTermWalker]: treesize reduction 5, result has 92.5 percent of original size 62 [2021-05-06 06:31:36,893 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=2, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:31:36,894 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~y~0_1 (+ v_main_~y~0_2 (- 2))) (= v_main_~x~0_3 (+ v_main_~x~0_2 1)) (< 0 v_main_~y~0_2) (= v_main_~z~0_1 (+ v_main_~z~0_2 1))) InVars {main_~x~0=v_main_~x~0_3, main_~z~0=v_main_~z~0_2, main_~y~0=v_main_~y~0_2} OutVars{main_#t~post10=|v_main_#t~post10_1|, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_1, main_~y~0=v_main_~y~0_1, main_#t~post11=|v_main_#t~post11_1|} AuxVars[] AssignedVars[main_#t~post10, main_~x~0, main_~z~0, main_~y~0, main_#t~post11] to Formula: (or (and (= v_main_~x~0_3 v_main_~x~0_2) (= v_main_~y~0_2 v_main_~y~0_1) (= v_itFin_1 0) (= |v_main_#t~post11_3| |v_main_#t~post11_1|) (<= v_main_~y~0_2 0) (= |v_main_#t~post10_3| |v_main_#t~post10_1|) (= v_main_~z~0_2 v_main_~z~0_1)) (and (= v_main_~x~0_3 (+ v_itFin_1 v_main_~x~0_2)) (< 0 v_itFin_1) (< v_itFin_1 (+ (div (+ v_main_~y~0_2 (- 1)) 2) 2)) (= (+ v_itFin_1 v_main_~z~0_2) v_main_~z~0_1) (= v_main_~y~0_2 (+ (* 2 v_itFin_1) v_main_~y~0_1)))) InVars {main_~y~0=v_main_~y~0_2, main_#t~post10=|v_main_#t~post10_3|, main_~x~0=v_main_~x~0_3, main_#t~post11=|v_main_#t~post11_3|, main_~z~0=v_main_~z~0_2} OutVars{main_~y~0=v_main_~y~0_1, main_#t~post10=|v_main_#t~post10_1|, main_~x~0=v_main_~x~0_2, main_#t~post11=|v_main_#t~post11_1|, main_~z~0=v_main_~z~0_1} AuxVars[v_itFin_1] AssignedVars[main_#t~post10, main_~x~0, main_~z~0, main_~y~0, main_#t~post11] [2021-05-06 06:31:36,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:31:36 BasicIcfg [2021-05-06 06:31:36,899 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:31:36,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:31:36,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:31:36,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:31:36,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:31:35" (1/4) ... [2021-05-06 06:31:36,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c9b179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:31:36, skipping insertion in model container [2021-05-06 06:31:36,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:31:36" (2/4) ... [2021-05-06 06:31:36,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c9b179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:31:36, skipping insertion in model container [2021-05-06 06:31:36,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:31:36" (3/4) ... [2021-05-06 06:31:36,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c9b179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:31:36, skipping insertion in model container [2021-05-06 06:31:36,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:31:36" (4/4) ... [2021-05-06 06:31:36,906 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_3.cJordan [2021-05-06 06:31:36,911 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:31:36,914 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:31:36,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:31:36,943 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:31:36,943 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:31:36,944 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:31:36,944 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:31:36,944 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:31:36,944 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:31:36,944 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:31:36,944 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:31:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 06:31:36,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:31:36,962 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:36,962 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:36,963 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:36,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:36,967 INFO L82 PathProgramCache]: Analyzing trace with hash 164364990, now seen corresponding path program 1 times [2021-05-06 06:31:36,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:36,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972916197] [2021-05-06 06:31:36,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:37,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:31:37,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:37,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972916197] [2021-05-06 06:31:37,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972916197] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:31:37,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:31:37,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:31:37,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313773700] [2021-05-06 06:31:37,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:31:37,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:37,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:31:37,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:31:37,175 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:37,210 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-06 06:31:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:31:37,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 06:31:37,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:37,217 INFO L225 Difference]: With dead ends: 21 [2021-05-06 06:31:37,217 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 06:31:37,218 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:31:37,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 06:31:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 06:31:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-05-06 06:31:37,242 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-05-06 06:31:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:37,242 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-05-06 06:31:37,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-05-06 06:31:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:31:37,243 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:37,243 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:37,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:31:37,243 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:37,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:37,244 INFO L82 PathProgramCache]: Analyzing trace with hash 165288511, now seen corresponding path program 1 times [2021-05-06 06:31:37,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:37,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004733650] [2021-05-06 06:31:37,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:37,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:31:37,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:37,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004733650] [2021-05-06 06:31:37,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004733650] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:31:37,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:31:37,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:31:37,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805344480] [2021-05-06 06:31:37,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:31:37,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:37,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:31:37,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:31:37,325 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:37,409 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-05-06 06:31:37,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:31:37,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 06:31:37,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:37,411 INFO L225 Difference]: With dead ends: 16 [2021-05-06 06:31:37,411 INFO L226 Difference]: Without dead ends: 16 [2021-05-06 06:31:37,412 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:31:37,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-06 06:31:37,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-06 06:31:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-06 06:31:37,419 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-05-06 06:31:37,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:37,420 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-06 06:31:37,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,421 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-06 06:31:37,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 06:31:37,421 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:37,421 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:37,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:31:37,422 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:37,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:37,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1054746269, now seen corresponding path program 1 times [2021-05-06 06:31:37,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:37,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838898440] [2021-05-06 06:31:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:37,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:37,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:31:37,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:37,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838898440] [2021-05-06 06:31:37,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838898440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:31:37,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:31:37,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:31:37,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756622324] [2021-05-06 06:31:37,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:31:37,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:37,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:31:37,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:31:37,541 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:37,593 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-05-06 06:31:37,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:31:37,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-06 06:31:37,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:37,595 INFO L225 Difference]: With dead ends: 17 [2021-05-06 06:31:37,595 INFO L226 Difference]: Without dead ends: 17 [2021-05-06 06:31:37,596 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:31:37,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-06 06:31:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-06 06:31:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-06 06:31:37,601 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-06 06:31:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:37,601 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-06 06:31:37,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-06 06:31:37,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 06:31:37,602 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:37,603 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:37,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 06:31:37,603 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:37,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1687477607, now seen corresponding path program 1 times [2021-05-06 06:31:37,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:37,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375822824] [2021-05-06 06:31:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:37,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:31:37,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:37,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375822824] [2021-05-06 06:31:37,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375822824] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:37,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697264830] [2021-05-06 06:31:37,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:37,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-06 06:31:37,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:37,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:37,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:31:37,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697264830] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:37,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:37,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-06 06:31:37,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496794175] [2021-05-06 06:31:37,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 06:31:37,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:37,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 06:31:37,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:31:37,810 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:37,922 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 06:31:37,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 06:31:37,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-06 06:31:37,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:37,925 INFO L225 Difference]: With dead ends: 19 [2021-05-06 06:31:37,925 INFO L226 Difference]: Without dead ends: 19 [2021-05-06 06:31:37,926 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 06:31:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-06 06:31:37,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-06 06:31:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-06 06:31:37,932 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-05-06 06:31:37,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:37,932 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-06 06:31:37,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:37,932 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-06 06:31:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 06:31:37,933 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:37,933 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:38,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:38,149 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:38,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:38,150 INFO L82 PathProgramCache]: Analyzing trace with hash -355394621, now seen corresponding path program 2 times [2021-05-06 06:31:38,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:38,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988501963] [2021-05-06 06:31:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:38,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-06 06:31:38,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:38,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988501963] [2021-05-06 06:31:38,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988501963] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:31:38,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:31:38,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:31:38,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678518883] [2021-05-06 06:31:38,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:31:38,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:38,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:31:38,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:31:38,198 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:38,244 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-05-06 06:31:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:31:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-06 06:31:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:38,245 INFO L225 Difference]: With dead ends: 21 [2021-05-06 06:31:38,245 INFO L226 Difference]: Without dead ends: 21 [2021-05-06 06:31:38,246 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:31:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-06 06:31:38,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-06 06:31:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-05-06 06:31:38,248 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2021-05-06 06:31:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:38,249 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-05-06 06:31:38,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-05-06 06:31:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-06 06:31:38,249 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:38,249 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:38,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-06 06:31:38,250 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:38,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:38,250 INFO L82 PathProgramCache]: Analyzing trace with hash 987258878, now seen corresponding path program 1 times [2021-05-06 06:31:38,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:38,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54276922] [2021-05-06 06:31:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:38,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:31:38,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:38,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54276922] [2021-05-06 06:31:38,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54276922] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:38,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514386440] [2021-05-06 06:31:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:38,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-06 06:31:38,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:38,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:38,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:38,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:38,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:31:38,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514386440] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:38,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:38,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-06 06:31:38,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080949586] [2021-05-06 06:31:38,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 06:31:38,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:38,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 06:31:38,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 06:31:38,502 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:38,632 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-06 06:31:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:31:38,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-06 06:31:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:38,634 INFO L225 Difference]: With dead ends: 22 [2021-05-06 06:31:38,634 INFO L226 Difference]: Without dead ends: 22 [2021-05-06 06:31:38,637 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:31:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-06 06:31:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-06 06:31:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-05-06 06:31:38,642 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-05-06 06:31:38,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:38,642 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-05-06 06:31:38,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-05-06 06:31:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-06 06:31:38,643 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:38,643 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:38,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:38,853 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:38,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:38,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1311371174, now seen corresponding path program 2 times [2021-05-06 06:31:38,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:38,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130676935] [2021-05-06 06:31:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:38,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:31:38,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:38,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130676935] [2021-05-06 06:31:38,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130676935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:38,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291594577] [2021-05-06 06:31:38,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:38,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:31:38,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:38,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 06:31:38,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:39,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:39,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:39,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:39,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:39,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:39,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:31:39,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291594577] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:39,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:39,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-06 06:31:39,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532595321] [2021-05-06 06:31:39,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 06:31:39,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:39,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 06:31:39,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 06:31:39,083 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:39,264 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-06 06:31:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 06:31:39,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-06 06:31:39,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:39,265 INFO L225 Difference]: With dead ends: 24 [2021-05-06 06:31:39,265 INFO L226 Difference]: Without dead ends: 24 [2021-05-06 06:31:39,266 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 157.8ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-06 06:31:39,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-06 06:31:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-06 06:31:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-06 06:31:39,268 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-05-06 06:31:39,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:39,269 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-06 06:31:39,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:39,269 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-06 06:31:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 06:31:39,269 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:39,270 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:39,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:39,470 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:39,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:39,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1613306294, now seen corresponding path program 3 times [2021-05-06 06:31:39,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:39,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274602211] [2021-05-06 06:31:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:39,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:31:39,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:39,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274602211] [2021-05-06 06:31:39,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274602211] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:39,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331796895] [2021-05-06 06:31:39,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:39,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 06:31:39,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:39,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-06 06:31:39,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:39,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:39,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:39,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:39,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-05-06 06:31:39,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331796895] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:39,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:39,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-05-06 06:31:39,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359074200] [2021-05-06 06:31:39,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 06:31:39,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:39,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 06:31:39,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:31:39,706 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:39,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:39,940 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-05-06 06:31:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 06:31:39,941 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-06 06:31:39,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:39,942 INFO L225 Difference]: With dead ends: 29 [2021-05-06 06:31:39,942 INFO L226 Difference]: Without dead ends: 29 [2021-05-06 06:31:39,943 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 229.5ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-06 06:31:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-06 06:31:39,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-06 06:31:39,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:39,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-06 06:31:39,945 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-05-06 06:31:39,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:39,946 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-06 06:31:39,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:39,946 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-06 06:31:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-06 06:31:39,946 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:39,946 INFO L523 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:40,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:40,148 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:40,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053811, now seen corresponding path program 4 times [2021-05-06 06:31:40,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:40,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066735199] [2021-05-06 06:31:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:31:40,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:40,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066735199] [2021-05-06 06:31:40,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066735199] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:40,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076718698] [2021-05-06 06:31:40,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:40,299 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:31:40,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:40,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:31:40,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:40,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:31:40,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076718698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:40,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:40,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-06 06:31:40,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115891642] [2021-05-06 06:31:40,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 06:31:40,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:40,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 06:31:40,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:31:40,386 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:40,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:40,591 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-06 06:31:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 06:31:40,591 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-06 06:31:40,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:40,592 INFO L225 Difference]: With dead ends: 30 [2021-05-06 06:31:40,592 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 06:31:40,592 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 201.4ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-06 06:31:40,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 06:31:40,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-06 06:31:40,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-06 06:31:40,595 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2021-05-06 06:31:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:40,595 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-06 06:31:40,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-06 06:31:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 06:31:40,596 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:40,596 INFO L523 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:40,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:40,809 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:40,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:40,809 INFO L82 PathProgramCache]: Analyzing trace with hash 163921129, now seen corresponding path program 5 times [2021-05-06 06:31:40,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:40,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521249810] [2021-05-06 06:31:40,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:31:40,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:40,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521249810] [2021-05-06 06:31:40,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521249810] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:40,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109861964] [2021-05-06 06:31:40,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:40,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-05-06 06:31:40,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:40,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 06:31:40,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:40,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:40,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:31:41,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109861964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:41,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:41,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-06 06:31:41,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038028201] [2021-05-06 06:31:41,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 06:31:41,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:41,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 06:31:41,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-06 06:31:41,064 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:41,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:41,280 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-06 06:31:41,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 06:31:41,281 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-06 06:31:41,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:41,281 INFO L225 Difference]: With dead ends: 32 [2021-05-06 06:31:41,281 INFO L226 Difference]: Without dead ends: 32 [2021-05-06 06:31:41,282 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 184.0ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-06 06:31:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-06 06:31:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-06 06:31:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-05-06 06:31:41,291 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2021-05-06 06:31:41,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:41,291 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-05-06 06:31:41,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:41,291 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-05-06 06:31:41,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-06 06:31:41,294 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:41,294 INFO L523 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:41,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:41,496 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:41,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:41,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1704405573, now seen corresponding path program 6 times [2021-05-06 06:31:41,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:41,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402848492] [2021-05-06 06:31:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:41,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:31:41,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:41,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402848492] [2021-05-06 06:31:41,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402848492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:41,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158421712] [2021-05-06 06:31:41,611 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:41,654 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-06 06:31:41,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:41,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 06:31:41,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:41,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 06:31:41,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158421712] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:41,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:41,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2021-05-06 06:31:41,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425294586] [2021-05-06 06:31:41,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 06:31:41,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:41,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 06:31:41,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-06 06:31:41,756 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:42,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:42,085 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-06 06:31:42,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 06:31:42,086 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-05-06 06:31:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:42,086 INFO L225 Difference]: With dead ends: 38 [2021-05-06 06:31:42,086 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 06:31:42,087 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 339.9ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-06 06:31:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 06:31:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-06 06:31:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-06 06:31:42,089 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 31 [2021-05-06 06:31:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:42,090 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-06 06:31:42,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-06 06:31:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-06 06:31:42,090 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:42,090 INFO L523 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:42,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:42,305 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:42,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:42,305 INFO L82 PathProgramCache]: Analyzing trace with hash -747599783, now seen corresponding path program 7 times [2021-05-06 06:31:42,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:42,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169528260] [2021-05-06 06:31:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:42,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:31:42,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:42,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169528260] [2021-05-06 06:31:42,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169528260] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:42,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815006764] [2021-05-06 06:31:42,435 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:42,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 06:31:42,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:42,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:31:42,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815006764] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:42,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:42,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-06 06:31:42,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875103263] [2021-05-06 06:31:42,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-06 06:31:42,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:42,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-06 06:31:42,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-06 06:31:42,634 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:42,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:42,995 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-05-06 06:31:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 06:31:42,995 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-06 06:31:42,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:42,996 INFO L225 Difference]: With dead ends: 40 [2021-05-06 06:31:42,996 INFO L226 Difference]: Without dead ends: 40 [2021-05-06 06:31:42,997 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 355.2ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-06 06:31:42,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-06 06:31:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-06 06:31:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-06 06:31:42,999 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 37 [2021-05-06 06:31:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:43,000 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-06 06:31:43,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-06 06:31:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 06:31:43,000 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:43,000 INFO L523 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:43,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-06 06:31:43,205 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:43,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1906137525, now seen corresponding path program 8 times [2021-05-06 06:31:43,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:43,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453967175] [2021-05-06 06:31:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:31:43,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:43,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453967175] [2021-05-06 06:31:43,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453967175] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:43,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652096194] [2021-05-06 06:31:43,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:43,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:31:43,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:43,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 06:31:43,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:43,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:31:43,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652096194] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:43,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:43,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-06 06:31:43,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344799849] [2021-05-06 06:31:43,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 06:31:43,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:43,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 06:31:43,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-06 06:31:43,474 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:43,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:43,878 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-06 06:31:43,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-06 06:31:43,879 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-06 06:31:43,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:43,879 INFO L225 Difference]: With dead ends: 42 [2021-05-06 06:31:43,879 INFO L226 Difference]: Without dead ends: 42 [2021-05-06 06:31:43,879 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 398.6ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-06 06:31:43,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-06 06:31:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-06 06:31:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-05-06 06:31:43,882 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 39 [2021-05-06 06:31:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:43,882 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-05-06 06:31:43,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-05-06 06:31:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-06 06:31:43,883 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:43,883 INFO L523 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:44,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:44,085 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:44,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:44,085 INFO L82 PathProgramCache]: Analyzing trace with hash 937116689, now seen corresponding path program 9 times [2021-05-06 06:31:44,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:44,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994561667] [2021-05-06 06:31:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 39 proven. 156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:31:44,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:44,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994561667] [2021-05-06 06:31:44,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994561667] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:44,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229391613] [2021-05-06 06:31:44,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:44,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-06 06:31:44,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:44,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 06:31:44,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:44,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:44,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:44,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:44,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:44,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:44,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-05-06 06:31:44,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229391613] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:44,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:44,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2021-05-06 06:31:44,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95491513] [2021-05-06 06:31:44,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 06:31:44,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:44,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 06:31:44,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-06 06:31:44,428 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:44,944 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-05-06 06:31:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-06 06:31:44,945 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-05-06 06:31:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:44,945 INFO L225 Difference]: With dead ends: 47 [2021-05-06 06:31:44,945 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 06:31:44,946 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 549.5ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 06:31:44,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 06:31:44,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-06 06:31:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-06 06:31:44,949 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 41 [2021-05-06 06:31:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:44,949 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-06 06:31:44,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-06 06:31:44,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-06 06:31:44,950 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:44,950 INFO L523 BasicCegarLoop]: trace histogram [16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:45,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:45,165 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:45,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:45,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1270675160, now seen corresponding path program 10 times [2021-05-06 06:31:45,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:45,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953650071] [2021-05-06 06:31:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 06:31:45,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:45,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953650071] [2021-05-06 06:31:45,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953650071] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:45,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104173960] [2021-05-06 06:31:45,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:45,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:31:45,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:45,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 06:31:45,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:45,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 06:31:45,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104173960] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:45,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:45,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-06 06:31:45,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464852137] [2021-05-06 06:31:45,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 06:31:45,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:45,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 06:31:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-06 06:31:45,525 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:45,984 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-05-06 06:31:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-06 06:31:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-06 06:31:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:45,985 INFO L225 Difference]: With dead ends: 48 [2021-05-06 06:31:45,985 INFO L226 Difference]: Without dead ends: 48 [2021-05-06 06:31:45,986 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 493.3ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-06 06:31:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-06 06:31:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-06 06:31:45,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-05-06 06:31:45,988 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 45 [2021-05-06 06:31:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:45,989 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-05-06 06:31:45,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:45,989 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-05-06 06:31:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-06 06:31:45,989 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:45,989 INFO L523 BasicCegarLoop]: trace histogram [17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:46,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-06 06:31:46,193 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:46,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:46,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1918452092, now seen corresponding path program 11 times [2021-05-06 06:31:46,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:46,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773676367] [2021-05-06 06:31:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:46,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 06:31:46,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:46,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773676367] [2021-05-06 06:31:46,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773676367] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:46,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726822822] [2021-05-06 06:31:46,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:46,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-06 06:31:46,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:46,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-06 06:31:46,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:46,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 06:31:46,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726822822] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:46,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:46,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-06 06:31:46,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179164622] [2021-05-06 06:31:46,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 06:31:46,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:46,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 06:31:46,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-06 06:31:46,533 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:47,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:47,075 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-06 06:31:47,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 06:31:47,075 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-06 06:31:47,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:47,076 INFO L225 Difference]: With dead ends: 50 [2021-05-06 06:31:47,076 INFO L226 Difference]: Without dead ends: 50 [2021-05-06 06:31:47,076 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 557.1ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 06:31:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-06 06:31:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-06 06:31:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-05-06 06:31:47,079 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 47 [2021-05-06 06:31:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:47,079 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-05-06 06:31:47,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:47,079 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-05-06 06:31:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-06 06:31:47,080 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:47,080 INFO L523 BasicCegarLoop]: trace histogram [18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:47,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-06 06:31:47,289 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:47,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1661825824, now seen corresponding path program 12 times [2021-05-06 06:31:47,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:47,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360768670] [2021-05-06 06:31:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:47,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 80 proven. 240 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 06:31:47,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:47,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360768670] [2021-05-06 06:31:47,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360768670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:47,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123640238] [2021-05-06 06:31:47,498 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:47,567 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-06 06:31:47,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:47,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-06 06:31:47,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:47,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:47,717 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 105 proven. 9 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-05-06 06:31:47,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123640238] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:47,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:47,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2021-05-06 06:31:47,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950134934] [2021-05-06 06:31:47,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-06 06:31:47,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:47,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-06 06:31:47,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-06 06:31:47,719 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:48,362 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-05-06 06:31:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 06:31:48,363 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-06 06:31:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:48,363 INFO L225 Difference]: With dead ends: 55 [2021-05-06 06:31:48,363 INFO L226 Difference]: Without dead ends: 55 [2021-05-06 06:31:48,364 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 752.6ms TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:31:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-06 06:31:48,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-06 06:31:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-05-06 06:31:48,367 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 49 [2021-05-06 06:31:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:48,367 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-05-06 06:31:48,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:48,368 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-05-06 06:31:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-06 06:31:48,368 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:48,368 INFO L523 BasicCegarLoop]: trace histogram [20, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:48,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-06 06:31:48,577 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:48,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1205387721, now seen corresponding path program 13 times [2021-05-06 06:31:48,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:48,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74023836] [2021-05-06 06:31:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:48,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 06:31:48,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:48,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74023836] [2021-05-06 06:31:48,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74023836] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:48,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499404339] [2021-05-06 06:31:48,767 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:48,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 06:31:48,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:48,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 06:31:48,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499404339] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:48,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:48,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-06 06:31:48,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959933320] [2021-05-06 06:31:48,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-06 06:31:48,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:48,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-06 06:31:48,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-06 06:31:48,957 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:49,478 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-06 06:31:49,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 06:31:49,479 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-06 06:31:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:49,479 INFO L225 Difference]: With dead ends: 56 [2021-05-06 06:31:49,479 INFO L226 Difference]: Without dead ends: 56 [2021-05-06 06:31:49,479 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 561.7ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 06:31:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-06 06:31:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-06 06:31:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-06 06:31:49,483 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 53 [2021-05-06 06:31:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:49,483 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-06 06:31:49,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-06 06:31:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-06 06:31:49,484 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:49,484 INFO L523 BasicCegarLoop]: trace histogram [21, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:49,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:49,697 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:49,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:49,697 INFO L82 PathProgramCache]: Analyzing trace with hash 698210195, now seen corresponding path program 14 times [2021-05-06 06:31:49,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:49,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340584611] [2021-05-06 06:31:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 06:31:49,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:49,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340584611] [2021-05-06 06:31:49,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340584611] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:49,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139532003] [2021-05-06 06:31:49,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:49,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:31:49,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:49,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 06:31:49,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:49,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:49,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:49,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:49,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:49,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:49,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:49,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 06:31:50,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139532003] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:50,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:50,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-06 06:31:50,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701118520] [2021-05-06 06:31:50,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-06 06:31:50,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:50,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-06 06:31:50,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-06 06:31:50,074 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:50,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:50,669 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-05-06 06:31:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-06 06:31:50,669 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-06 06:31:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:50,669 INFO L225 Difference]: With dead ends: 58 [2021-05-06 06:31:50,669 INFO L226 Difference]: Without dead ends: 58 [2021-05-06 06:31:50,670 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 674.9ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 06:31:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-06 06:31:50,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-06 06:31:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2021-05-06 06:31:50,676 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 55 [2021-05-06 06:31:50,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:50,677 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2021-05-06 06:31:50,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:50,677 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2021-05-06 06:31:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-06 06:31:50,677 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:50,677 INFO L523 BasicCegarLoop]: trace histogram [22, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:50,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:50,889 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:50,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:50,889 INFO L82 PathProgramCache]: Analyzing trace with hash 399739375, now seen corresponding path program 15 times [2021-05-06 06:31:50,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:50,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822521904] [2021-05-06 06:31:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:51,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 06:31:51,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:51,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822521904] [2021-05-06 06:31:51,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822521904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:51,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170476979] [2021-05-06 06:31:51,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:51,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-06 06:31:51,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:51,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:31:51,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:51,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 162 proven. 16 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-05-06 06:31:51,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170476979] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:51,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:51,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 27 [2021-05-06 06:31:51,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696510295] [2021-05-06 06:31:51,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 06:31:51,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:51,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 06:31:51,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-06 06:31:51,382 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:52,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:52,252 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-05-06 06:31:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 06:31:52,252 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-06 06:31:52,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:52,253 INFO L225 Difference]: With dead ends: 63 [2021-05-06 06:31:52,253 INFO L226 Difference]: Without dead ends: 63 [2021-05-06 06:31:52,254 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 993.3ms TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:31:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-06 06:31:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-06 06:31:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 57 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:52,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-05-06 06:31:52,256 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 57 [2021-05-06 06:31:52,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:52,257 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-05-06 06:31:52,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-05-06 06:31:52,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-06 06:31:52,257 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:52,257 INFO L523 BasicCegarLoop]: trace histogram [24, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:52,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:52,473 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:52,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:52,473 INFO L82 PathProgramCache]: Analyzing trace with hash -837478522, now seen corresponding path program 16 times [2021-05-06 06:31:52,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:52,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604060698] [2021-05-06 06:31:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:52,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-06 06:31:52,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:52,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604060698] [2021-05-06 06:31:52,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604060698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:52,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816212669] [2021-05-06 06:31:52,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:52,792 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:31:52,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:52,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 06:31:52,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:52,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-06 06:31:52,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816212669] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:52,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:52,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-06 06:31:52,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526186475] [2021-05-06 06:31:52,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-06 06:31:52,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:52,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-06 06:31:52,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-06 06:31:52,941 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:53,614 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-05-06 06:31:53,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 06:31:53,614 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-06 06:31:53,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:53,615 INFO L225 Difference]: With dead ends: 64 [2021-05-06 06:31:53,615 INFO L226 Difference]: Without dead ends: 64 [2021-05-06 06:31:53,615 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 755.6ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 06:31:53,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-06 06:31:53,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-06 06:31:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-05-06 06:31:53,617 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 61 [2021-05-06 06:31:53,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:53,617 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-05-06 06:31:53,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-05-06 06:31:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-06 06:31:53,619 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:53,619 INFO L523 BasicCegarLoop]: trace histogram [25, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:53,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-06 06:31:53,821 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:53,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1736796958, now seen corresponding path program 17 times [2021-05-06 06:31:53,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:53,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506187243] [2021-05-06 06:31:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-06 06:31:54,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:54,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506187243] [2021-05-06 06:31:54,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506187243] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:54,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746751644] [2021-05-06 06:31:54,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:54,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-06 06:31:54,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:54,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 06:31:54,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:54,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-06 06:31:54,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746751644] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:54,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:54,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-06 06:31:54,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636107544] [2021-05-06 06:31:54,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-06 06:31:54,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:54,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-06 06:31:54,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-06 06:31:54,232 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:54,903 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-05-06 06:31:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-06 06:31:54,904 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-06 06:31:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:54,904 INFO L225 Difference]: With dead ends: 66 [2021-05-06 06:31:54,904 INFO L226 Difference]: Without dead ends: 66 [2021-05-06 06:31:54,905 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 783.7ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 06:31:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-06 06:31:54,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-06 06:31:54,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-05-06 06:31:54,907 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 63 [2021-05-06 06:31:54,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:54,907 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-05-06 06:31:54,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-05-06 06:31:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-06 06:31:54,908 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:54,908 INFO L523 BasicCegarLoop]: trace histogram [26, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:55,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-06 06:31:55,117 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:55,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1601579838, now seen corresponding path program 18 times [2021-05-06 06:31:55,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:55,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977803611] [2021-05-06 06:31:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:55,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 198 proven. 462 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-06 06:31:55,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:55,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977803611] [2021-05-06 06:31:55,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977803611] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:55,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181685829] [2021-05-06 06:31:55,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:55,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-06 06:31:55,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:55,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 06:31:55,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:55,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 231 proven. 25 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-05-06 06:31:55,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181685829] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:55,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:55,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2021-05-06 06:31:55,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423024319] [2021-05-06 06:31:55,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 06:31:55,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:55,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 06:31:55,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-06 06:31:55,714 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:56,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:56,758 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-05-06 06:31:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-06 06:31:56,758 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-05-06 06:31:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:56,759 INFO L225 Difference]: With dead ends: 71 [2021-05-06 06:31:56,759 INFO L226 Difference]: Without dead ends: 71 [2021-05-06 06:31:56,759 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1262.8ms TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 06:31:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-06 06:31:56,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-06 06:31:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.123076923076923) internal successors, (73), 65 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:56,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-05-06 06:31:56,761 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 65 [2021-05-06 06:31:56,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:56,762 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-05-06 06:31:56,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:56,762 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-05-06 06:31:56,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-06 06:31:56,762 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:56,762 INFO L523 BasicCegarLoop]: trace histogram [28, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:56,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-06 06:31:56,981 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:56,981 INFO L82 PathProgramCache]: Analyzing trace with hash 852002069, now seen corresponding path program 19 times [2021-05-06 06:31:56,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:56,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699052746] [2021-05-06 06:31:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:57,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-06 06:31:57,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:57,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699052746] [2021-05-06 06:31:57,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699052746] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:57,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699678534] [2021-05-06 06:31:57,259 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:57,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-06 06:31:57,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:57,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:57,459 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-06 06:31:57,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699678534] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:57,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:57,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-06 06:31:57,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041025250] [2021-05-06 06:31:57,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 06:31:57,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:57,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 06:31:57,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-06 06:31:57,462 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:58,336 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-05-06 06:31:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-06 06:31:58,336 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-06 06:31:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:58,337 INFO L225 Difference]: With dead ends: 72 [2021-05-06 06:31:58,337 INFO L226 Difference]: Without dead ends: 72 [2021-05-06 06:31:58,337 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 969.8ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 06:31:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-06 06:31:58,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-06 06:31:58,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 67 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-05-06 06:31:58,339 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 69 [2021-05-06 06:31:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:58,340 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-05-06 06:31:58,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:58,340 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-05-06 06:31:58,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-06 06:31:58,340 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:58,340 INFO L523 BasicCegarLoop]: trace histogram [29, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:31:58,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-06 06:31:58,557 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:31:58,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:31:58,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2063132273, now seen corresponding path program 20 times [2021-05-06 06:31:58,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:31:58,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153602017] [2021-05-06 06:31:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:31:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:58,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:31:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:31:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-06 06:31:58,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:31:58,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153602017] [2021-05-06 06:31:58,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153602017] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:58,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070001956] [2021-05-06 06:31:58,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:31:58,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:31:58,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:31:58,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 06:31:58,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:31:58,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:58,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:31:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-06 06:31:59,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070001956] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:31:59,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:31:59,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-06 06:31:59,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172496209] [2021-05-06 06:31:59,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 06:31:59,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:31:59,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 06:31:59,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-06 06:31:59,110 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:59,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:31:59,961 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-06 06:31:59,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 06:31:59,962 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-06 06:31:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:31:59,962 INFO L225 Difference]: With dead ends: 74 [2021-05-06 06:31:59,962 INFO L226 Difference]: Without dead ends: 74 [2021-05-06 06:31:59,963 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 953.4ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 06:31:59,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-06 06:31:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-06 06:31:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 69 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-06 06:31:59,965 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 71 [2021-05-06 06:31:59,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:31:59,965 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-06 06:31:59,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:31:59,965 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-06 06:31:59,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-06 06:31:59,966 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:31:59,966 INFO L523 BasicCegarLoop]: trace histogram [30, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:00,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-06 06:32:00,181 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:00,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:00,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2023121101, now seen corresponding path program 21 times [2021-05-06 06:32:00,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:00,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928840661] [2021-05-06 06:32:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:00,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 275 proven. 600 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-06 06:32:00,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:00,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928840661] [2021-05-06 06:32:00,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928840661] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:00,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509248480] [2021-05-06 06:32:00,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:00,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-06 06:32:00,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:00,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 06:32:00,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:00,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-05-06 06:32:00,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509248480] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:00,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:00,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2021-05-06 06:32:00,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295729152] [2021-05-06 06:32:00,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-06 06:32:00,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:00,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-06 06:32:00,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 06:32:00,882 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:02,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:02,093 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-05-06 06:32:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 06:32:02,099 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-06 06:32:02,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:02,100 INFO L225 Difference]: With dead ends: 79 [2021-05-06 06:32:02,100 INFO L226 Difference]: Without dead ends: 79 [2021-05-06 06:32:02,101 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1480.7ms TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:32:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-06 06:32:02,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-06 06:32:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 73 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-05-06 06:32:02,104 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 73 [2021-05-06 06:32:02,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:02,104 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-05-06 06:32:02,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-05-06 06:32:02,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-06 06:32:02,105 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:02,105 INFO L523 BasicCegarLoop]: trace histogram [32, 25, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:02,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:02,313 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:02,313 INFO L82 PathProgramCache]: Analyzing trace with hash 264337124, now seen corresponding path program 22 times [2021-05-06 06:32:02,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:02,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437866612] [2021-05-06 06:32:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:02,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-06 06:32:02,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:02,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437866612] [2021-05-06 06:32:02,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437866612] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:02,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46650117] [2021-05-06 06:32:02,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:02,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:32:02,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:02,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 06:32:02,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:02,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-06 06:32:02,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46650117] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:02,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:02,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-06 06:32:02,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787699466] [2021-05-06 06:32:02,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-06 06:32:02,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:02,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-06 06:32:02,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-06 06:32:02,910 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:03,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:03,807 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-05-06 06:32:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-06 06:32:03,808 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-06 06:32:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:03,808 INFO L225 Difference]: With dead ends: 80 [2021-05-06 06:32:03,808 INFO L226 Difference]: Without dead ends: 80 [2021-05-06 06:32:03,809 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1045.0ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 06:32:03,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-06 06:32:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-06 06:32:03,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.12) internal successors, (84), 75 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-05-06 06:32:03,811 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 77 [2021-05-06 06:32:03,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:03,811 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-05-06 06:32:03,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:03,811 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-05-06 06:32:03,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-06 06:32:03,812 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:03,812 INFO L523 BasicCegarLoop]: trace histogram [33, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:04,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-06 06:32:04,017 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:04,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1587067968, now seen corresponding path program 23 times [2021-05-06 06:32:04,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:04,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040673057] [2021-05-06 06:32:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-06 06:32:04,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:04,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040673057] [2021-05-06 06:32:04,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040673057] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:04,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787070687] [2021-05-06 06:32:04,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:04,445 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-06 06:32:04,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:04,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 06:32:04,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:04,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-06 06:32:04,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787070687] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:04,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:04,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-06 06:32:04,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766893481] [2021-05-06 06:32:04,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 06:32:04,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:04,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 06:32:04,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-06 06:32:04,613 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:05,595 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-05-06 06:32:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-06 06:32:05,595 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-05-06 06:32:05,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:05,596 INFO L225 Difference]: With dead ends: 82 [2021-05-06 06:32:05,596 INFO L226 Difference]: Without dead ends: 82 [2021-05-06 06:32:05,597 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1150.8ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 06:32:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-06 06:32:05,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-06 06:32:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 77 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-05-06 06:32:05,599 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 79 [2021-05-06 06:32:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:05,599 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-05-06 06:32:05,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-05-06 06:32:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-06 06:32:05,600 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:05,600 INFO L523 BasicCegarLoop]: trace histogram [34, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:05,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:05,823 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:05,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1421089436, now seen corresponding path program 24 times [2021-05-06 06:32:05,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:05,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90867393] [2021-05-06 06:32:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:06,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 364 proven. 756 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-06 06:32:06,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:06,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90867393] [2021-05-06 06:32:06,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90867393] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:06,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703485481] [2021-05-06 06:32:06,198 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:06,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-06 06:32:06,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:06,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 06:32:06,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:06,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 405 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-05-06 06:32:06,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703485481] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:06,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:06,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10] total 39 [2021-05-06 06:32:06,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739891382] [2021-05-06 06:32:06,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 06:32:06,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:06,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 06:32:06,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 06:32:06,652 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:07,992 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-05-06 06:32:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 06:32:07,993 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-05-06 06:32:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:07,993 INFO L225 Difference]: With dead ends: 87 [2021-05-06 06:32:07,993 INFO L226 Difference]: Without dead ends: 87 [2021-05-06 06:32:07,995 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1693.6ms TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:32:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-06 06:32:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-06 06:32:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.123456790123457) internal successors, (91), 81 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-05-06 06:32:07,997 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 81 [2021-05-06 06:32:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:07,997 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-05-06 06:32:07,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-05-06 06:32:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-06 06:32:07,997 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:07,998 INFO L523 BasicCegarLoop]: trace histogram [36, 28, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:08,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-06 06:32:08,215 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:08,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1514396915, now seen corresponding path program 25 times [2021-05-06 06:32:08,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:08,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148592736] [2021-05-06 06:32:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-06 06:32:08,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:08,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148592736] [2021-05-06 06:32:08,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148592736] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:08,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146128182] [2021-05-06 06:32:08,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:08,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-06 06:32:08,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:08,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-06 06:32:08,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146128182] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:08,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:08,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-06 06:32:08,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321650747] [2021-05-06 06:32:08,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-06 06:32:08,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:08,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-06 06:32:08,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-06 06:32:08,860 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:09,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:09,809 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2021-05-06 06:32:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-06 06:32:09,810 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-06 06:32:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:09,810 INFO L225 Difference]: With dead ends: 88 [2021-05-06 06:32:09,810 INFO L226 Difference]: Without dead ends: 88 [2021-05-06 06:32:09,811 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1174.6ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 06:32:09,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-06 06:32:09,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-06 06:32:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.1204819277108433) internal successors, (93), 83 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-05-06 06:32:09,813 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 85 [2021-05-06 06:32:09,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:09,813 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-05-06 06:32:09,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-05-06 06:32:09,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-06 06:32:09,813 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:09,813 INFO L523 BasicCegarLoop]: trace histogram [37, 29, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:10,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:10,014 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:10,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:10,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1667365297, now seen corresponding path program 26 times [2021-05-06 06:32:10,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:10,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118166596] [2021-05-06 06:32:10,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:10,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-06 06:32:10,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:10,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118166596] [2021-05-06 06:32:10,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118166596] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:10,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347579054] [2021-05-06 06:32:10,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:10,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:32:10,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:10,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 06:32:10,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:10,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-06 06:32:10,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347579054] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:10,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:10,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-06 06:32:10,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468690820] [2021-05-06 06:32:10,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-06 06:32:10,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:10,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-06 06:32:10,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 06:32:10,655 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:11,758 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2021-05-06 06:32:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-06 06:32:11,759 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-06 06:32:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:11,759 INFO L225 Difference]: With dead ends: 90 [2021-05-06 06:32:11,759 INFO L226 Difference]: Without dead ends: 90 [2021-05-06 06:32:11,760 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1269.9ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 06:32:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-06 06:32:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-06 06:32:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 85 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-05-06 06:32:11,762 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 87 [2021-05-06 06:32:11,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:11,762 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-05-06 06:32:11,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-05-06 06:32:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-06 06:32:11,763 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:11,763 INFO L523 BasicCegarLoop]: trace histogram [38, 30, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:11,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-06 06:32:11,969 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:11,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:11,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1324136277, now seen corresponding path program 27 times [2021-05-06 06:32:11,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:11,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091113582] [2021-05-06 06:32:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:12,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 465 proven. 930 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-06 06:32:12,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:12,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091113582] [2021-05-06 06:32:12,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091113582] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:12,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757202261] [2021-05-06 06:32:12,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:12,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-06 06:32:12,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:12,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 06:32:12,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:12,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 510 proven. 64 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2021-05-06 06:32:12,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757202261] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:12,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:12,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 11] total 43 [2021-05-06 06:32:12,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404593276] [2021-05-06 06:32:12,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 06:32:12,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:12,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 06:32:12,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:32:12,858 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:14,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:14,398 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-05-06 06:32:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-06 06:32:14,398 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2021-05-06 06:32:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:14,399 INFO L225 Difference]: With dead ends: 95 [2021-05-06 06:32:14,399 INFO L226 Difference]: Without dead ends: 95 [2021-05-06 06:32:14,399 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 2006.8ms TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 06:32:14,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-06 06:32:14,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-06 06:32:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.1235955056179776) internal successors, (100), 89 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-05-06 06:32:14,402 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 89 [2021-05-06 06:32:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:14,402 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-05-06 06:32:14,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-05-06 06:32:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-06 06:32:14,403 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:14,403 INFO L523 BasicCegarLoop]: trace histogram [40, 31, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:14,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:14,609 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:14,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:14,609 INFO L82 PathProgramCache]: Analyzing trace with hash -229136574, now seen corresponding path program 28 times [2021-05-06 06:32:14,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:14,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942288518] [2021-05-06 06:32:14,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:15,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-06 06:32:15,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:15,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942288518] [2021-05-06 06:32:15,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942288518] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:15,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001833970] [2021-05-06 06:32:15,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:15,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:32:15,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:15,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 06:32:15,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:15,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-06 06:32:15,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001833970] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:15,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:15,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-06 06:32:15,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678212805] [2021-05-06 06:32:15,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-06 06:32:15,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:15,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-06 06:32:15,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 06:32:15,374 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:16,505 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-05-06 06:32:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 06:32:16,505 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-06 06:32:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:16,506 INFO L225 Difference]: With dead ends: 96 [2021-05-06 06:32:16,506 INFO L226 Difference]: Without dead ends: 96 [2021-05-06 06:32:16,506 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1458.7ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 06:32:16,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-06 06:32:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-06 06:32:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.120879120879121) internal successors, (102), 91 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2021-05-06 06:32:16,508 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 93 [2021-05-06 06:32:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:16,509 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2021-05-06 06:32:16,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2021-05-06 06:32:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-06 06:32:16,509 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:16,509 INFO L523 BasicCegarLoop]: trace histogram [41, 32, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:16,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-06 06:32:16,713 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:16,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:16,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2031137950, now seen corresponding path program 29 times [2021-05-06 06:32:16,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:16,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116887239] [2021-05-06 06:32:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:17,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-06 06:32:17,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:17,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116887239] [2021-05-06 06:32:17,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116887239] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:17,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425351240] [2021-05-06 06:32:17,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:17,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-06 06:32:17,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:17,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-06 06:32:17,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:17,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-06 06:32:17,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425351240] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:17,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:17,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-06 06:32:17,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379330262] [2021-05-06 06:32:17,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-06 06:32:17,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:17,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-06 06:32:17,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-06 06:32:17,501 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:18,753 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-05-06 06:32:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-06 06:32:18,754 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-06 06:32:18,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:18,754 INFO L225 Difference]: With dead ends: 98 [2021-05-06 06:32:18,754 INFO L226 Difference]: Without dead ends: 98 [2021-05-06 06:32:18,755 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1561.1ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 06:32:18,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-06 06:32:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-06 06:32:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-05-06 06:32:18,757 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 95 [2021-05-06 06:32:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:18,757 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-05-06 06:32:18,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-05-06 06:32:18,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-06 06:32:18,758 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:18,758 INFO L523 BasicCegarLoop]: trace histogram [42, 33, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:18,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:18,969 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:18,969 INFO L82 PathProgramCache]: Analyzing trace with hash 901503738, now seen corresponding path program 30 times [2021-05-06 06:32:18,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:18,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663716178] [2021-05-06 06:32:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:19,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 578 proven. 1122 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-06 06:32:19,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:19,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663716178] [2021-05-06 06:32:19,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663716178] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:19,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308473119] [2021-05-06 06:32:19,540 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:19,657 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-06 06:32:19,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:19,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 06:32:19,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:19,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:19,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 627 proven. 81 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2021-05-06 06:32:20,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308473119] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:20,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:20,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 47 [2021-05-06 06:32:20,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402215766] [2021-05-06 06:32:20,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-06 06:32:20,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:20,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-06 06:32:20,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 06:32:20,086 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:21,895 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-05-06 06:32:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 06:32:21,895 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2021-05-06 06:32:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:21,896 INFO L225 Difference]: With dead ends: 103 [2021-05-06 06:32:21,896 INFO L226 Difference]: Without dead ends: 103 [2021-05-06 06:32:21,897 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2400.3ms TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:32:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-06 06:32:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-06 06:32:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 97 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-05-06 06:32:21,899 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 97 [2021-05-06 06:32:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:21,899 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-05-06 06:32:21,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-05-06 06:32:21,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-06 06:32:21,900 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:21,900 INFO L523 BasicCegarLoop]: trace histogram [44, 34, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:22,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-06 06:32:22,113 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:22,113 INFO L82 PathProgramCache]: Analyzing trace with hash 29935057, now seen corresponding path program 31 times [2021-05-06 06:32:22,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:22,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321068509] [2021-05-06 06:32:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:22,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-06 06:32:22,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:22,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321068509] [2021-05-06 06:32:22,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321068509] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:22,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577744567] [2021-05-06 06:32:22,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:22,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-06 06:32:22,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:22,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-06 06:32:22,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577744567] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:22,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:22,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-06 06:32:22,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622069824] [2021-05-06 06:32:22,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 06:32:22,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:22,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 06:32:22,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 06:32:22,882 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:24,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:24,083 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2021-05-06 06:32:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-06 06:32:24,084 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-06 06:32:24,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:24,084 INFO L225 Difference]: With dead ends: 104 [2021-05-06 06:32:24,084 INFO L226 Difference]: Without dead ends: 104 [2021-05-06 06:32:24,085 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1598.9ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 06:32:24,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-06 06:32:24,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-06 06:32:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.121212121212121) internal successors, (111), 99 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-05-06 06:32:24,087 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 101 [2021-05-06 06:32:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:24,087 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-05-06 06:32:24,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-05-06 06:32:24,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-06 06:32:24,088 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:24,088 INFO L523 BasicCegarLoop]: trace histogram [45, 35, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:24,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-06 06:32:24,294 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:24,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:24,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2118338771, now seen corresponding path program 32 times [2021-05-06 06:32:24,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:24,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365041843] [2021-05-06 06:32:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:24,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-06 06:32:24,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:24,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365041843] [2021-05-06 06:32:24,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365041843] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:24,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579754879] [2021-05-06 06:32:24,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:25,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:32:25,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:25,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 06:32:25,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:25,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-06 06:32:25,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579754879] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:25,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:25,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-06 06:32:25,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345210641] [2021-05-06 06:32:25,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-06 06:32:25,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:25,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-06 06:32:25,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 06:32:25,214 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:26,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:26,573 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2021-05-06 06:32:26,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 06:32:26,573 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2021-05-06 06:32:26,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:26,574 INFO L225 Difference]: With dead ends: 106 [2021-05-06 06:32:26,574 INFO L226 Difference]: Without dead ends: 106 [2021-05-06 06:32:26,574 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1767.3ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 06:32:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-06 06:32:26,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-05-06 06:32:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.118811881188119) internal successors, (113), 101 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2021-05-06 06:32:26,576 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 103 [2021-05-06 06:32:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:26,576 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2021-05-06 06:32:26,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2021-05-06 06:32:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-06 06:32:26,577 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:26,577 INFO L523 BasicCegarLoop]: trace histogram [46, 36, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:26,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-06 06:32:26,793 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:26,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:26,793 INFO L82 PathProgramCache]: Analyzing trace with hash -730218103, now seen corresponding path program 33 times [2021-05-06 06:32:26,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:26,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284070484] [2021-05-06 06:32:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:27,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 703 proven. 1332 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-06 06:32:27,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:27,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284070484] [2021-05-06 06:32:27,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284070484] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:27,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624462321] [2021-05-06 06:32:27,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:27,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-06 06:32:27,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:27,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 06:32:27,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:27,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:27,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 756 proven. 100 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2021-05-06 06:32:28,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624462321] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:28,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:28,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13] total 51 [2021-05-06 06:32:28,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733625577] [2021-05-06 06:32:28,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 06:32:28,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:28,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 06:32:28,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:32:28,024 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 50 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:30,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:30,113 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-05-06 06:32:30,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 06:32:30,113 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 50 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-06 06:32:30,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:30,114 INFO L225 Difference]: With dead ends: 111 [2021-05-06 06:32:30,114 INFO L226 Difference]: Without dead ends: 111 [2021-05-06 06:32:30,114 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 2843.4ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:32:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-06 06:32:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-06 06:32:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1238095238095238) internal successors, (118), 105 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:30,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-05-06 06:32:30,117 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 105 [2021-05-06 06:32:30,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:30,117 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-05-06 06:32:30,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 50 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:30,117 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-05-06 06:32:30,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-06 06:32:30,118 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:30,118 INFO L523 BasicCegarLoop]: trace histogram [48, 37, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:30,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-06 06:32:30,325 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:30,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1691932512, now seen corresponding path program 34 times [2021-05-06 06:32:30,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:30,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343978255] [2021-05-06 06:32:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:30,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-06 06:32:30,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:30,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343978255] [2021-05-06 06:32:30,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343978255] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:30,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564434593] [2021-05-06 06:32:30,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:31,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:32:31,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:31,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 06:32:31,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:31,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-06 06:32:31,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564434593] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:31,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:31,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-06 06:32:31,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248406932] [2021-05-06 06:32:31,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-06 06:32:31,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:31,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-06 06:32:31,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 06:32:31,215 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 41 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:32,642 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-05-06 06:32:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-06 06:32:32,643 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 41 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-06 06:32:32,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:32,643 INFO L225 Difference]: With dead ends: 112 [2021-05-06 06:32:32,644 INFO L226 Difference]: Without dead ends: 112 [2021-05-06 06:32:32,644 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1813.4ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 06:32:32,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-06 06:32:32,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-05-06 06:32:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 107 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2021-05-06 06:32:32,646 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 109 [2021-05-06 06:32:32,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:32,646 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-05-06 06:32:32,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 41 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2021-05-06 06:32:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-06 06:32:32,647 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:32,647 INFO L523 BasicCegarLoop]: trace histogram [49, 38, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:32,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-06 06:32:32,857 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:32,857 INFO L82 PathProgramCache]: Analyzing trace with hash 758251004, now seen corresponding path program 35 times [2021-05-06 06:32:32,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:32,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964304451] [2021-05-06 06:32:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:33,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-06 06:32:33,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:33,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964304451] [2021-05-06 06:32:33,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964304451] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:33,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936592748] [2021-05-06 06:32:33,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:33,683 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-05-06 06:32:33,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:33,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-06 06:32:33,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:33,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-06 06:32:33,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936592748] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:33,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:33,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-06 06:32:33,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539458202] [2021-05-06 06:32:33,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 06:32:33,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:33,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 06:32:33,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 06:32:33,873 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:35,391 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2021-05-06 06:32:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-06 06:32:35,391 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2021-05-06 06:32:35,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:35,392 INFO L225 Difference]: With dead ends: 114 [2021-05-06 06:32:35,392 INFO L226 Difference]: Without dead ends: 114 [2021-05-06 06:32:35,392 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 2092.8ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 06:32:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-06 06:32:35,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-05-06 06:32:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 109 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2021-05-06 06:32:35,395 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 111 [2021-05-06 06:32:35,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:35,395 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2021-05-06 06:32:35,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:35,395 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2021-05-06 06:32:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-06 06:32:35,395 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:35,395 INFO L523 BasicCegarLoop]: trace histogram [50, 39, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:35,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-06 06:32:35,605 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:35,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1742531672, now seen corresponding path program 36 times [2021-05-06 06:32:35,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:35,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949976049] [2021-05-06 06:32:35,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 840 proven. 1560 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-06 06:32:36,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:36,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949976049] [2021-05-06 06:32:36,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949976049] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:36,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577639508] [2021-05-06 06:32:36,316 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:36,406 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-06 06:32:36,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:36,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-06 06:32:36,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:36,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:36,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 897 proven. 121 refuted. 0 times theorem prover too weak. 1483 trivial. 0 not checked. [2021-05-06 06:32:36,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577639508] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:36,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:36,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 14] total 55 [2021-05-06 06:32:36,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239398111] [2021-05-06 06:32:36,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-06 06:32:36,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:36,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-06 06:32:36,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 06:32:36,982 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:39,250 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2021-05-06 06:32:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-06 06:32:39,251 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2021-05-06 06:32:39,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:39,251 INFO L225 Difference]: With dead ends: 119 [2021-05-06 06:32:39,251 INFO L226 Difference]: Without dead ends: 119 [2021-05-06 06:32:39,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 3107.2ms TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 06:32:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-06 06:32:39,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-06 06:32:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 113 states have internal predecessors, (127), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2021-05-06 06:32:39,254 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 113 [2021-05-06 06:32:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:39,254 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2021-05-06 06:32:39,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2021-05-06 06:32:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-06 06:32:39,255 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:39,255 INFO L523 BasicCegarLoop]: trace histogram [52, 40, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:39,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-05-06 06:32:39,461 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:39,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:39,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1731805265, now seen corresponding path program 37 times [2021-05-06 06:32:39,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:39,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700904029] [2021-05-06 06:32:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-06 06:32:40,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:40,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700904029] [2021-05-06 06:32:40,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700904029] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:40,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447058562] [2021-05-06 06:32:40,239 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:40,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-06 06:32:40,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:40,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-06 06:32:40,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447058562] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:40,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:40,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-06 06:32:40,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541688773] [2021-05-06 06:32:40,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-06 06:32:40,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:40,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-06 06:32:40,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-06 06:32:40,488 INFO L87 Difference]: Start difference. First operand 118 states and 131 transitions. Second operand has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 44 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:42,053 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-05-06 06:32:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-06 06:32:42,053 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 44 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-06 06:32:42,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:42,054 INFO L225 Difference]: With dead ends: 120 [2021-05-06 06:32:42,054 INFO L226 Difference]: Without dead ends: 120 [2021-05-06 06:32:42,054 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 2124.4ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 06:32:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-06 06:32:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-06 06:32:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 115 states have internal predecessors, (129), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2021-05-06 06:32:42,056 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 117 [2021-05-06 06:32:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:42,056 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2021-05-06 06:32:42,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 44 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2021-05-06 06:32:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-06 06:32:42,057 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:42,057 INFO L523 BasicCegarLoop]: trace histogram [53, 41, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:42,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:42,269 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1178306293, now seen corresponding path program 38 times [2021-05-06 06:32:42,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:42,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369834350] [2021-05-06 06:32:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:43,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-06 06:32:43,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:43,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369834350] [2021-05-06 06:32:43,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369834350] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:43,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066993639] [2021-05-06 06:32:43,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:43,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:32:43,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:43,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-06 06:32:43,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:43,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-06 06:32:43,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066993639] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:43,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:43,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-06 06:32:43,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664570030] [2021-05-06 06:32:43,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-06 06:32:43,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:43,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-06 06:32:43,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 06:32:43,263 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:45,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:45,012 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2021-05-06 06:32:45,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-06 06:32:45,013 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-05-06 06:32:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:45,013 INFO L225 Difference]: With dead ends: 122 [2021-05-06 06:32:45,014 INFO L226 Difference]: Without dead ends: 122 [2021-05-06 06:32:45,014 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2208.3ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 06:32:45,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-06 06:32:45,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-05-06 06:32:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 117 states have internal predecessors, (131), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2021-05-06 06:32:45,016 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 119 [2021-05-06 06:32:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:45,017 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2021-05-06 06:32:45,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:45,017 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2021-05-06 06:32:45,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-06 06:32:45,017 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:45,018 INFO L523 BasicCegarLoop]: trace histogram [54, 42, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:45,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:45,233 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:45,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:45,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1841738905, now seen corresponding path program 39 times [2021-05-06 06:32:45,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:45,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042228925] [2021-05-06 06:32:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 989 proven. 1806 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-06 06:32:46,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:46,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042228925] [2021-05-06 06:32:46,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042228925] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:46,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817616483] [2021-05-06 06:32:46,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:46,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-06 06:32:46,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:46,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 06:32:46,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:46,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 1050 proven. 144 refuted. 0 times theorem prover too weak. 1723 trivial. 0 not checked. [2021-05-06 06:32:46,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817616483] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:46,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:46,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 15] total 59 [2021-05-06 06:32:46,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865666669] [2021-05-06 06:32:46,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-06 06:32:46,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:46,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-06 06:32:46,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 06:32:46,752 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:49,306 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2021-05-06 06:32:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 06:32:49,307 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-05-06 06:32:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:49,307 INFO L225 Difference]: With dead ends: 127 [2021-05-06 06:32:49,307 INFO L226 Difference]: Without dead ends: 127 [2021-05-06 06:32:49,308 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 3535.3ms TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:32:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-06 06:32:49,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-06 06:32:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 121 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-05-06 06:32:49,310 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 121 [2021-05-06 06:32:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:49,311 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-05-06 06:32:49,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-05-06 06:32:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-06 06:32:49,311 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:49,311 INFO L523 BasicCegarLoop]: trace histogram [56, 43, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:49,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:49,521 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:49,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:49,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1145079042, now seen corresponding path program 40 times [2021-05-06 06:32:49,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:49,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984372668] [2021-05-06 06:32:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:50,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-06 06:32:50,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:50,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984372668] [2021-05-06 06:32:50,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984372668] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:50,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753394314] [2021-05-06 06:32:50,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:50,434 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:32:50,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:50,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-06 06:32:50,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:50,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-06 06:32:50,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753394314] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:50,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:50,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-06 06:32:50,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613628994] [2021-05-06 06:32:50,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-06 06:32:50,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:50,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-06 06:32:50,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 06:32:50,662 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 47 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:52,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:52,419 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-05-06 06:32:52,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 06:32:52,419 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 47 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2021-05-06 06:32:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:52,420 INFO L225 Difference]: With dead ends: 128 [2021-05-06 06:32:52,420 INFO L226 Difference]: Without dead ends: 128 [2021-05-06 06:32:52,421 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2323.5ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 06:32:52,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-06 06:32:52,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-06 06:32:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 123 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2021-05-06 06:32:52,423 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 125 [2021-05-06 06:32:52,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:52,423 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2021-05-06 06:32:52,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 47 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2021-05-06 06:32:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-06 06:32:52,424 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:52,424 INFO L523 BasicCegarLoop]: trace histogram [57, 44, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:52,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-06 06:32:52,645 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:52,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:52,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1284249690, now seen corresponding path program 41 times [2021-05-06 06:32:52,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:52,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550264582] [2021-05-06 06:32:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:53,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-06 06:32:53,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:53,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550264582] [2021-05-06 06:32:53,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550264582] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:53,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673125975] [2021-05-06 06:32:53,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:53,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-05-06 06:32:53,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:53,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-06 06:32:53,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:53,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-06 06:32:53,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673125975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:53,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:53,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-06 06:32:53,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669938286] [2021-05-06 06:32:53,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-06 06:32:53,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:53,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-06 06:32:53,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-06 06:32:53,814 INFO L87 Difference]: Start difference. First operand 128 states and 142 transitions. Second operand has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:55,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:32:55,660 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2021-05-06 06:32:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-06 06:32:55,660 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2021-05-06 06:32:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:32:55,661 INFO L225 Difference]: With dead ends: 130 [2021-05-06 06:32:55,661 INFO L226 Difference]: Without dead ends: 130 [2021-05-06 06:32:55,661 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2464.6ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 06:32:55,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-06 06:32:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-05-06 06:32:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.12) internal successors, (140), 125 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:55,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2021-05-06 06:32:55,663 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 127 [2021-05-06 06:32:55,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:32:55,663 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2021-05-06 06:32:55,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:32:55,663 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2021-05-06 06:32:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-06 06:32:55,664 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:32:55,664 INFO L523 BasicCegarLoop]: trace histogram [58, 45, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:32:55,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:55,881 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:32:55,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:32:55,881 INFO L82 PathProgramCache]: Analyzing trace with hash -593047882, now seen corresponding path program 42 times [2021-05-06 06:32:55,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:32:55,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25019124] [2021-05-06 06:32:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:32:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:56,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:32:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:32:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3365 backedges. 1150 proven. 2070 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-06 06:32:56,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:32:56,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25019124] [2021-05-06 06:32:56,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25019124] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:56,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375623491] [2021-05-06 06:32:56,797 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:32:56,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-06 06:32:56,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:32:56,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-06 06:32:56,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:32:56,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:56,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:32:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3365 backedges. 1215 proven. 169 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2021-05-06 06:32:57,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375623491] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:32:57,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:32:57,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16] total 63 [2021-05-06 06:32:57,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035465724] [2021-05-06 06:32:57,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-06 06:32:57,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:32:57,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-06 06:32:57,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 06:32:57,642 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 62 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:00,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:00,515 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2021-05-06 06:33:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 06:33:00,515 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 62 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2021-05-06 06:33:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:00,516 INFO L225 Difference]: With dead ends: 135 [2021-05-06 06:33:00,516 INFO L226 Difference]: Without dead ends: 135 [2021-05-06 06:33:00,517 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 4026.5ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-06 06:33:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-06 06:33:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-06 06:33:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.124031007751938) internal successors, (145), 129 states have internal predecessors, (145), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:00,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-05-06 06:33:00,519 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 129 [2021-05-06 06:33:00,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:00,519 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-05-06 06:33:00,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 62 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:00,520 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-05-06 06:33:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-06 06:33:00,520 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:00,520 INFO L523 BasicCegarLoop]: trace histogram [60, 46, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:00,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:00,737 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:00,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:00,737 INFO L82 PathProgramCache]: Analyzing trace with hash 183323277, now seen corresponding path program 43 times [2021-05-06 06:33:00,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:00,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008631319] [2021-05-06 06:33:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:01,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-06 06:33:01,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:01,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008631319] [2021-05-06 06:33:01,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008631319] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:01,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665100520] [2021-05-06 06:33:01,651 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:01,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-06 06:33:01,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:01,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-06 06:33:01,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665100520] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:01,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:01,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-06 06:33:01,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687391189] [2021-05-06 06:33:01,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 06:33:01,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:01,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 06:33:01,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 06:33:01,938 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:03,794 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-05-06 06:33:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-06 06:33:03,794 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2021-05-06 06:33:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:03,795 INFO L225 Difference]: With dead ends: 136 [2021-05-06 06:33:03,795 INFO L226 Difference]: Without dead ends: 136 [2021-05-06 06:33:03,795 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2583.7ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 06:33:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-06 06:33:03,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-05-06 06:33:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.1221374045801527) internal successors, (147), 131 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2021-05-06 06:33:03,797 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 133 [2021-05-06 06:33:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:03,798 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2021-05-06 06:33:03,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:03,798 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2021-05-06 06:33:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-06 06:33:03,798 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:03,798 INFO L523 BasicCegarLoop]: trace histogram [61, 47, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:03,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-06 06:33:03,999 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:03,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:03,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1348783081, now seen corresponding path program 44 times [2021-05-06 06:33:03,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:03,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862622125] [2021-05-06 06:33:03,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-06 06:33:05,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:05,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862622125] [2021-05-06 06:33:05,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862622125] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:05,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732459642] [2021-05-06 06:33:05,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:05,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:33:05,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:05,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-06 06:33:05,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:05,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-06 06:33:05,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732459642] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:05,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:05,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-06 06:33:05,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270437198] [2021-05-06 06:33:05,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-06 06:33:05,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:05,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-06 06:33:05,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 06:33:05,295 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:07,351 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2021-05-06 06:33:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 06:33:07,352 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2021-05-06 06:33:07,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:07,352 INFO L225 Difference]: With dead ends: 138 [2021-05-06 06:33:07,352 INFO L226 Difference]: Without dead ends: 138 [2021-05-06 06:33:07,353 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2756.5ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 06:33:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-05-06 06:33:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-05-06 06:33:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.1203007518796992) internal successors, (149), 133 states have internal predecessors, (149), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2021-05-06 06:33:07,355 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 135 [2021-05-06 06:33:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:07,356 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2021-05-06 06:33:07,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2021-05-06 06:33:07,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-06 06:33:07,357 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:07,357 INFO L523 BasicCegarLoop]: trace histogram [62, 48, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:07,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-06 06:33:07,580 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:07,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash 369190469, now seen corresponding path program 45 times [2021-05-06 06:33:07,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:07,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806996820] [2021-05-06 06:33:07,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 1323 proven. 2352 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-06 06:33:08,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:08,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806996820] [2021-05-06 06:33:08,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806996820] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:08,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364693664] [2021-05-06 06:33:08,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:08,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-06 06:33:08,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:08,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 06:33:08,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:08,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:08,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 1392 proven. 196 refuted. 0 times theorem prover too weak. 2257 trivial. 0 not checked. [2021-05-06 06:33:09,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364693664] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:09,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:09,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 17] total 67 [2021-05-06 06:33:09,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362165430] [2021-05-06 06:33:09,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-06 06:33:09,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:09,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-06 06:33:09,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:33:09,487 INFO L87 Difference]: Start difference. First operand 138 states and 153 transitions. Second operand has 67 states, 67 states have (on average 2.1343283582089554) internal successors, (143), 66 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:12,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:12,614 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2021-05-06 06:33:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-06 06:33:12,614 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1343283582089554) internal successors, (143), 66 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137 [2021-05-06 06:33:12,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:12,615 INFO L225 Difference]: With dead ends: 143 [2021-05-06 06:33:12,615 INFO L226 Difference]: Without dead ends: 143 [2021-05-06 06:33:12,616 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 4460.6ms TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2021-05-06 06:33:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-06 06:33:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-06 06:33:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1240875912408759) internal successors, (154), 137 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-05-06 06:33:12,618 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 137 [2021-05-06 06:33:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:12,618 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-05-06 06:33:12,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.1343283582089554) internal successors, (143), 66 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-05-06 06:33:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-06 06:33:12,619 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:12,619 INFO L523 BasicCegarLoop]: trace histogram [64, 49, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:12,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-06 06:33:12,841 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:12,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:12,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1911561820, now seen corresponding path program 46 times [2021-05-06 06:33:12,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:12,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993799540] [2021-05-06 06:33:12,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:13,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-06 06:33:13,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:13,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993799540] [2021-05-06 06:33:13,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993799540] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:13,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50254670] [2021-05-06 06:33:13,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:14,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:33:14,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:14,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-06 06:33:14,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:14,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-06 06:33:14,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50254670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:14,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:14,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-06 06:33:14,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118438004] [2021-05-06 06:33:14,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-06 06:33:14,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:14,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-06 06:33:14,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 06:33:14,277 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 53 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:16,678 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2021-05-06 06:33:16,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-06 06:33:16,678 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 53 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-06 06:33:16,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:16,679 INFO L225 Difference]: With dead ends: 144 [2021-05-06 06:33:16,679 INFO L226 Difference]: Without dead ends: 144 [2021-05-06 06:33:16,679 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 3105.5ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-06 06:33:16,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-06 06:33:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-05-06 06:33:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.1223021582733812) internal successors, (156), 139 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2021-05-06 06:33:16,682 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 141 [2021-05-06 06:33:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:16,682 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2021-05-06 06:33:16,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 53 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:16,682 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2021-05-06 06:33:16,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-06 06:33:16,683 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:16,683 INFO L523 BasicCegarLoop]: trace histogram [65, 50, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:16,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:16,906 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:16,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:16,906 INFO L82 PathProgramCache]: Analyzing trace with hash 351175608, now seen corresponding path program 47 times [2021-05-06 06:33:16,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:16,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803889096] [2021-05-06 06:33:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:17,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-06 06:33:17,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:17,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803889096] [2021-05-06 06:33:17,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803889096] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:17,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329419269] [2021-05-06 06:33:17,970 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:18,056 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-06 06:33:18,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:18,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-06 06:33:18,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:18,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-06 06:33:18,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329419269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:18,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:18,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-06 06:33:18,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670755461] [2021-05-06 06:33:18,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-06 06:33:18,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:18,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-06 06:33:18,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 06:33:18,281 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:20,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:20,540 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2021-05-06 06:33:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-06 06:33:20,540 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-06 06:33:20,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:20,541 INFO L225 Difference]: With dead ends: 146 [2021-05-06 06:33:20,541 INFO L226 Difference]: Without dead ends: 146 [2021-05-06 06:33:20,542 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 2986.2ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 06:33:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-06 06:33:20,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-06 06:33:20,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.1205673758865249) internal successors, (158), 141 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2021-05-06 06:33:20,544 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 143 [2021-05-06 06:33:20,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:20,545 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2021-05-06 06:33:20,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2021-05-06 06:33:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-06 06:33:20,545 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:20,545 INFO L523 BasicCegarLoop]: trace histogram [66, 51, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:20,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:20,761 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash -236387820, now seen corresponding path program 48 times [2021-05-06 06:33:20,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:20,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647272015] [2021-05-06 06:33:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:21,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4357 backedges. 1508 proven. 2652 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-06 06:33:21,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:21,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647272015] [2021-05-06 06:33:21,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647272015] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:21,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693590319] [2021-05-06 06:33:21,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:21,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-06 06:33:21,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:21,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 06:33:21,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:22,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4357 backedges. 1581 proven. 225 refuted. 0 times theorem prover too weak. 2551 trivial. 0 not checked. [2021-05-06 06:33:22,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693590319] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:22,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:22,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 18] total 71 [2021-05-06 06:33:22,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820545750] [2021-05-06 06:33:22,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-06 06:33:22,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:22,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-06 06:33:22,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-06 06:33:22,983 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:26,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:26,438 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-05-06 06:33:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 06:33:26,439 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-05-06 06:33:26,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:26,440 INFO L225 Difference]: With dead ends: 151 [2021-05-06 06:33:26,440 INFO L226 Difference]: Without dead ends: 151 [2021-05-06 06:33:26,441 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 5021.3ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-06 06:33:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-06 06:33:26,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-06 06:33:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.1241379310344828) internal successors, (163), 145 states have internal predecessors, (163), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2021-05-06 06:33:26,443 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 145 [2021-05-06 06:33:26,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:26,443 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2021-05-06 06:33:26,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:26,443 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2021-05-06 06:33:26,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-06 06:33:26,444 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:26,444 INFO L523 BasicCegarLoop]: trace histogram [68, 52, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:26,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-06 06:33:26,667 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1607735701, now seen corresponding path program 49 times [2021-05-06 06:33:26,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:26,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911154761] [2021-05-06 06:33:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:27,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-06 06:33:27,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:27,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911154761] [2021-05-06 06:33:27,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911154761] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:27,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725440519] [2021-05-06 06:33:27,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:27,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-06 06:33:27,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:27,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:27,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-06 06:33:28,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725440519] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:28,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:28,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-06 06:33:28,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664870382] [2021-05-06 06:33:28,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-06 06:33:28,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:28,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-06 06:33:28,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-06 06:33:28,140 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand has 57 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 56 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:30,442 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2021-05-06 06:33:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-06 06:33:30,443 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 56 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-05-06 06:33:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:30,443 INFO L225 Difference]: With dead ends: 152 [2021-05-06 06:33:30,443 INFO L226 Difference]: Without dead ends: 152 [2021-05-06 06:33:30,444 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 3214.7ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-06 06:33:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-06 06:33:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-05-06 06:33:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.1224489795918366) internal successors, (165), 147 states have internal predecessors, (165), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:30,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2021-05-06 06:33:30,446 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 149 [2021-05-06 06:33:30,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:30,446 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2021-05-06 06:33:30,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 56 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2021-05-06 06:33:30,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-06 06:33:30,447 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:30,447 INFO L523 BasicCegarLoop]: trace histogram [69, 53, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:30,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:30,657 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:30,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1383256121, now seen corresponding path program 50 times [2021-05-06 06:33:30,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:30,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371704132] [2021-05-06 06:33:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:31,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-06 06:33:31,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:31,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371704132] [2021-05-06 06:33:31,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371704132] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:31,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001235349] [2021-05-06 06:33:31,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:31,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:33:31,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:31,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-06 06:33:31,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:31,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:31,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-06 06:33:32,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001235349] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:32,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:32,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-06 06:33:32,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358991219] [2021-05-06 06:33:32,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-06 06:33:32,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:32,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-06 06:33:32,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 06:33:32,124 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:34,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:34,556 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2021-05-06 06:33:34,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-06 06:33:34,557 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2021-05-06 06:33:34,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:34,557 INFO L225 Difference]: With dead ends: 154 [2021-05-06 06:33:34,557 INFO L226 Difference]: Without dead ends: 154 [2021-05-06 06:33:34,558 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3315.2ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 06:33:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-06 06:33:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-05-06 06:33:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 1.1208053691275168) internal successors, (167), 149 states have internal predecessors, (167), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2021-05-06 06:33:34,560 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 151 [2021-05-06 06:33:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:34,560 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2021-05-06 06:33:34,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2021-05-06 06:33:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-06 06:33:34,561 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:34,561 INFO L523 BasicCegarLoop]: trace histogram [70, 54, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:34,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-06 06:33:34,781 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:34,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:34,781 INFO L82 PathProgramCache]: Analyzing trace with hash -406744541, now seen corresponding path program 51 times [2021-05-06 06:33:34,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:34,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367813808] [2021-05-06 06:33:34,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:36,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:36,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1705 proven. 2970 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-06 06:33:36,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:36,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367813808] [2021-05-06 06:33:36,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367813808] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:36,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149652780] [2021-05-06 06:33:36,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:36,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-06 06:33:36,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:36,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 06:33:36,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:36,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:36,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:37,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:37,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1782 proven. 256 refuted. 0 times theorem prover too weak. 2863 trivial. 0 not checked. [2021-05-06 06:33:37,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149652780] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:37,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:37,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 19] total 75 [2021-05-06 06:33:37,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856805202] [2021-05-06 06:33:37,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-06 06:33:37,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:37,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-06 06:33:37,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:33:37,085 INFO L87 Difference]: Start difference. First operand 154 states and 171 transitions. Second operand has 75 states, 75 states have (on average 2.12) internal successors, (159), 74 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:40,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:40,875 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2021-05-06 06:33:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 06:33:40,875 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.12) internal successors, (159), 74 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-05-06 06:33:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:40,876 INFO L225 Difference]: With dead ends: 159 [2021-05-06 06:33:40,876 INFO L226 Difference]: Without dead ends: 159 [2021-05-06 06:33:40,876 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 5462.9ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-06 06:33:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-06 06:33:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-06 06:33:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.1241830065359477) internal successors, (172), 153 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2021-05-06 06:33:40,878 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 153 [2021-05-06 06:33:40,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:40,879 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2021-05-06 06:33:40,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.12) internal successors, (159), 74 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2021-05-06 06:33:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-06 06:33:40,879 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:40,879 INFO L523 BasicCegarLoop]: trace histogram [72, 55, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:41,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-06 06:33:41,085 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:41,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:41,085 INFO L82 PathProgramCache]: Analyzing trace with hash 667456186, now seen corresponding path program 52 times [2021-05-06 06:33:41,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:41,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081666641] [2021-05-06 06:33:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:42,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-06 06:33:42,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:42,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081666641] [2021-05-06 06:33:42,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081666641] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:42,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042628517] [2021-05-06 06:33:42,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:42,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:33:42,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:42,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-06 06:33:42,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:42,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-06 06:33:42,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042628517] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:42,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:42,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-06 06:33:42,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105724243] [2021-05-06 06:33:42,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-06 06:33:42,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:42,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-06 06:33:42,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 06:33:42,650 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 59 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:45,224 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-05-06 06:33:45,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 06:33:45,224 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 59 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-06 06:33:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:45,225 INFO L225 Difference]: With dead ends: 160 [2021-05-06 06:33:45,225 INFO L226 Difference]: Without dead ends: 160 [2021-05-06 06:33:45,225 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 3496.9ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-06 06:33:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-06 06:33:45,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-05-06 06:33:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.1225806451612903) internal successors, (174), 155 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 178 transitions. [2021-05-06 06:33:45,227 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 178 transitions. Word has length 157 [2021-05-06 06:33:45,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:45,227 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 178 transitions. [2021-05-06 06:33:45,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 59 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:45,227 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 178 transitions. [2021-05-06 06:33:45,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-06 06:33:45,228 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:45,228 INFO L523 BasicCegarLoop]: trace histogram [73, 56, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:45,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-06 06:33:45,428 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:45,429 INFO L82 PathProgramCache]: Analyzing trace with hash 275300374, now seen corresponding path program 53 times [2021-05-06 06:33:45,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:45,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588064148] [2021-05-06 06:33:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5330 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-06 06:33:46,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:46,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588064148] [2021-05-06 06:33:46,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588064148] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:46,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100217310] [2021-05-06 06:33:46,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:46,820 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2021-05-06 06:33:46,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:46,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-06 06:33:46,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:46,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:46,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5330 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-06 06:33:47,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100217310] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:47,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:47,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-06 06:33:47,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207245876] [2021-05-06 06:33:47,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-06 06:33:47,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:47,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-06 06:33:47,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-06 06:33:47,080 INFO L87 Difference]: Start difference. First operand 160 states and 178 transitions. Second operand has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:49,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:49,769 INFO L93 Difference]: Finished difference Result 162 states and 180 transitions. [2021-05-06 06:33:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-06 06:33:49,770 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2021-05-06 06:33:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:49,770 INFO L225 Difference]: With dead ends: 162 [2021-05-06 06:33:49,770 INFO L226 Difference]: Without dead ends: 162 [2021-05-06 06:33:49,771 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3621.1ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 06:33:49,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-06 06:33:49,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-05-06 06:33:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.1210191082802548) internal successors, (176), 157 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2021-05-06 06:33:49,773 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 159 [2021-05-06 06:33:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:49,774 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2021-05-06 06:33:49,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2021-05-06 06:33:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-06 06:33:49,774 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:49,775 INFO L523 BasicCegarLoop]: trace histogram [74, 57, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:49,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-06 06:33:49,989 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:49,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1370687090, now seen corresponding path program 54 times [2021-05-06 06:33:49,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:49,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769890038] [2021-05-06 06:33:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:51,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:51,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 1914 proven. 3306 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-06 06:33:51,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:51,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769890038] [2021-05-06 06:33:51,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769890038] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:51,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763841119] [2021-05-06 06:33:51,363 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:51,482 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-06 06:33:51,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:33:51,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-06 06:33:51,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:51,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:51,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 1995 proven. 289 refuted. 0 times theorem prover too weak. 3193 trivial. 0 not checked. [2021-05-06 06:33:52,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763841119] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:52,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:52,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 20] total 79 [2021-05-06 06:33:52,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354673288] [2021-05-06 06:33:52,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-06 06:33:52,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:52,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-06 06:33:52,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 06:33:52,586 INFO L87 Difference]: Start difference. First operand 162 states and 180 transitions. Second operand has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 78 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:33:56,754 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2021-05-06 06:33:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-06 06:33:56,755 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 78 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2021-05-06 06:33:56,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:33:56,755 INFO L225 Difference]: With dead ends: 167 [2021-05-06 06:33:56,755 INFO L226 Difference]: Without dead ends: 167 [2021-05-06 06:33:56,756 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 6042.8ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-06 06:33:56,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-06 06:33:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-06 06:33:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.124223602484472) internal successors, (181), 161 states have internal predecessors, (181), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2021-05-06 06:33:56,758 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 161 [2021-05-06 06:33:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:33:56,758 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2021-05-06 06:33:56,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 78 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:33:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2021-05-06 06:33:56,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-06 06:33:56,758 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:33:56,758 INFO L523 BasicCegarLoop]: trace histogram [76, 58, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:33:56,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:56,959 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:33:56,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:33:56,959 INFO L82 PathProgramCache]: Analyzing trace with hash -592309431, now seen corresponding path program 55 times [2021-05-06 06:33:56,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:33:56,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640944438] [2021-05-06 06:33:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:33:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:33:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-06 06:33:58,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:33:58,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640944438] [2021-05-06 06:33:58,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640944438] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:58,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061571842] [2021-05-06 06:33:58,345 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:33:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:33:58,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-06 06:33:58,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:33:58,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:33:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-06 06:33:58,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061571842] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:33:58,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:33:58,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-06 06:33:58,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190725672] [2021-05-06 06:33:58,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-06 06:33:58,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:33:58,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-06 06:33:58,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 06:33:58,686 INFO L87 Difference]: Start difference. First operand 166 states and 185 transitions. Second operand has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:01,493 INFO L93 Difference]: Finished difference Result 168 states and 187 transitions. [2021-05-06 06:34:01,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-06 06:34:01,494 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-05-06 06:34:01,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:01,494 INFO L225 Difference]: With dead ends: 168 [2021-05-06 06:34:01,494 INFO L226 Difference]: Without dead ends: 168 [2021-05-06 06:34:01,495 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3812.6ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-06 06:34:01,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-06 06:34:01,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-05-06 06:34:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.1226993865030674) internal successors, (183), 163 states have internal predecessors, (183), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:01,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2021-05-06 06:34:01,497 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 165 [2021-05-06 06:34:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:01,497 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2021-05-06 06:34:01,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2021-05-06 06:34:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-06 06:34:01,498 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:01,498 INFO L523 BasicCegarLoop]: trace histogram [77, 59, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:01,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-06 06:34:01,705 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:01,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:01,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1970087077, now seen corresponding path program 56 times [2021-05-06 06:34:01,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:01,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434551861] [2021-05-06 06:34:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:03,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5930 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-06 06:34:03,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:03,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434551861] [2021-05-06 06:34:03,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434551861] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:03,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750284119] [2021-05-06 06:34:03,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:03,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:34:03,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:03,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-06 06:34:03,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:03,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5930 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-06 06:34:03,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750284119] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:03,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:03,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-06 06:34:03,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395377848] [2021-05-06 06:34:03,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-06 06:34:03,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:03,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-06 06:34:03,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 06:34:03,457 INFO L87 Difference]: Start difference. First operand 168 states and 187 transitions. Second operand has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:06,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:06,360 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2021-05-06 06:34:06,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 06:34:06,361 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-05-06 06:34:06,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:06,361 INFO L225 Difference]: With dead ends: 170 [2021-05-06 06:34:06,361 INFO L226 Difference]: Without dead ends: 170 [2021-05-06 06:34:06,362 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 3929.9ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-06 06:34:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-06 06:34:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-05-06 06:34:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.121212121212121) internal successors, (185), 165 states have internal predecessors, (185), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 189 transitions. [2021-05-06 06:34:06,364 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 189 transitions. Word has length 167 [2021-05-06 06:34:06,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:06,364 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 189 transitions. [2021-05-06 06:34:06,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 189 transitions. [2021-05-06 06:34:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-06 06:34:06,365 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:06,365 INFO L523 BasicCegarLoop]: trace histogram [78, 60, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:06,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:06,581 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:06,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:06,581 INFO L82 PathProgramCache]: Analyzing trace with hash -878096639, now seen corresponding path program 57 times [2021-05-06 06:34:06,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:06,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932946181] [2021-05-06 06:34:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:08,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6085 backedges. 2135 proven. 3660 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-06 06:34:08,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:08,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932946181] [2021-05-06 06:34:08,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932946181] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:08,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206196166] [2021-05-06 06:34:08,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:08,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-06 06:34:08,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:08,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 06:34:08,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:08,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:08,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6085 backedges. 2220 proven. 324 refuted. 0 times theorem prover too weak. 3541 trivial. 0 not checked. [2021-05-06 06:34:09,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206196166] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:09,386 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:09,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 21] total 83 [2021-05-06 06:34:09,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612371186] [2021-05-06 06:34:09,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-06 06:34:09,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:09,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-06 06:34:09,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 06:34:09,387 INFO L87 Difference]: Start difference. First operand 170 states and 189 transitions. Second operand has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:13,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:13,955 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2021-05-06 06:34:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 06:34:13,956 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2021-05-06 06:34:13,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:13,956 INFO L225 Difference]: With dead ends: 175 [2021-05-06 06:34:13,956 INFO L226 Difference]: Without dead ends: 175 [2021-05-06 06:34:13,957 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 6612.2ms TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2021-05-06 06:34:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-06 06:34:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-06 06:34:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.1242603550295858) internal successors, (190), 169 states have internal predecessors, (190), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-05-06 06:34:13,960 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 169 [2021-05-06 06:34:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:13,960 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-05-06 06:34:13,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-05-06 06:34:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-06 06:34:13,961 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:13,961 INFO L523 BasicCegarLoop]: trace histogram [80, 61, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:14,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-06 06:34:14,177 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:14,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:14,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1939363864, now seen corresponding path program 58 times [2021-05-06 06:34:14,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:14,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790642473] [2021-05-06 06:34:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:15,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6401 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-06 06:34:15,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:15,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790642473] [2021-05-06 06:34:15,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790642473] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:15,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085814504] [2021-05-06 06:34:15,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:15,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:34:15,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:15,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-06 06:34:15,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:15,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:15,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6401 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-06 06:34:16,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085814504] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:16,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:16,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-06 06:34:16,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778269948] [2021-05-06 06:34:16,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-06 06:34:16,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:16,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-06 06:34:16,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 06:34:16,107 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:19,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:19,320 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2021-05-06 06:34:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-06 06:34:19,320 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-05-06 06:34:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:19,321 INFO L225 Difference]: With dead ends: 176 [2021-05-06 06:34:19,321 INFO L226 Difference]: Without dead ends: 176 [2021-05-06 06:34:19,321 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 4356.1ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-06 06:34:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-06 06:34:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-06 06:34:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.1228070175438596) internal successors, (192), 171 states have internal predecessors, (192), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:19,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2021-05-06 06:34:19,323 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 173 [2021-05-06 06:34:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:19,323 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2021-05-06 06:34:19,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2021-05-06 06:34:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-06 06:34:19,324 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:19,324 INFO L523 BasicCegarLoop]: trace histogram [81, 62, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:19,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:19,547 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:19,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:19,548 INFO L82 PathProgramCache]: Analyzing trace with hash -179679884, now seen corresponding path program 59 times [2021-05-06 06:34:19,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:19,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825080651] [2021-05-06 06:34:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:21,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-06 06:34:21,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:21,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825080651] [2021-05-06 06:34:21,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825080651] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:21,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847153210] [2021-05-06 06:34:21,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:21,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2021-05-06 06:34:21,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:21,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-06 06:34:21,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:21,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-06 06:34:21,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847153210] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:21,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:21,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-06 06:34:21,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872330221] [2021-05-06 06:34:21,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-06 06:34:21,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:21,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-06 06:34:21,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 06:34:21,517 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:24,682 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2021-05-06 06:34:24,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-06 06:34:24,683 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2021-05-06 06:34:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:24,683 INFO L225 Difference]: With dead ends: 178 [2021-05-06 06:34:24,683 INFO L226 Difference]: Without dead ends: 178 [2021-05-06 06:34:24,684 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4329.1ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-06 06:34:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-05-06 06:34:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-05-06 06:34:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.1213872832369942) internal successors, (194), 173 states have internal predecessors, (194), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2021-05-06 06:34:24,686 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 175 [2021-05-06 06:34:24,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:24,686 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2021-05-06 06:34:24,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2021-05-06 06:34:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-06 06:34:24,687 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:24,687 INFO L523 BasicCegarLoop]: trace histogram [82, 63, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:24,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-06 06:34:24,888 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:24,888 INFO L82 PathProgramCache]: Analyzing trace with hash -766223408, now seen corresponding path program 60 times [2021-05-06 06:34:24,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:24,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619461612] [2021-05-06 06:34:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6725 backedges. 2368 proven. 4032 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-06 06:34:26,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:26,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619461612] [2021-05-06 06:34:26,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619461612] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:26,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109344050] [2021-05-06 06:34:26,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:26,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-06 06:34:26,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:26,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 06:34:26,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:26,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:26,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:26,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:26,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:26,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:26,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:26,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:26,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:26,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:26,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6725 backedges. 2457 proven. 361 refuted. 0 times theorem prover too weak. 3907 trivial. 0 not checked. [2021-05-06 06:34:27,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109344050] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:27,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:27,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 22] total 87 [2021-05-06 06:34:27,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242030065] [2021-05-06 06:34:27,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-06 06:34:27,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:27,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-06 06:34:27,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 06:34:27,955 INFO L87 Difference]: Start difference. First operand 178 states and 198 transitions. Second operand has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:32,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:32,908 INFO L93 Difference]: Finished difference Result 183 states and 205 transitions. [2021-05-06 06:34:32,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 06:34:32,909 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2021-05-06 06:34:32,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:32,909 INFO L225 Difference]: With dead ends: 183 [2021-05-06 06:34:32,909 INFO L226 Difference]: Without dead ends: 183 [2021-05-06 06:34:32,910 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 7221.1ms TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2021-05-06 06:34:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-06 06:34:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-06 06:34:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.1242937853107344) internal successors, (199), 177 states have internal predecessors, (199), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2021-05-06 06:34:32,913 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 177 [2021-05-06 06:34:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:32,913 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2021-05-06 06:34:32,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2021-05-06 06:34:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-06 06:34:32,914 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:32,914 INFO L523 BasicCegarLoop]: trace histogram [84, 64, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:33,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:33,137 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:33,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1626296615, now seen corresponding path program 61 times [2021-05-06 06:34:33,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:33,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784730183] [2021-05-06 06:34:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:34,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-06 06:34:34,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:34,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784730183] [2021-05-06 06:34:34,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784730183] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:34,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632900929] [2021-05-06 06:34:34,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:34,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-06 06:34:34,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:34,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:34,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-06 06:34:35,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632900929] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:35,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:35,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-06 06:34:35,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227764872] [2021-05-06 06:34:35,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-06 06:34:35,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:35,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-06 06:34:35,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-06 06:34:35,183 INFO L87 Difference]: Start difference. First operand 182 states and 203 transitions. Second operand has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:38,471 INFO L93 Difference]: Finished difference Result 184 states and 205 transitions. [2021-05-06 06:34:38,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-06 06:34:38,471 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-06 06:34:38,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:38,472 INFO L225 Difference]: With dead ends: 184 [2021-05-06 06:34:38,472 INFO L226 Difference]: Without dead ends: 184 [2021-05-06 06:34:38,473 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 4565.7ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-06 06:34:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-05-06 06:34:38,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-05-06 06:34:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.1229050279329609) internal successors, (201), 179 states have internal predecessors, (201), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2021-05-06 06:34:38,475 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 181 [2021-05-06 06:34:38,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:38,475 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2021-05-06 06:34:38,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:38,475 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2021-05-06 06:34:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-06 06:34:38,475 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:38,475 INFO L523 BasicCegarLoop]: trace histogram [85, 65, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:38,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-06 06:34:38,676 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:38,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:38,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1752443523, now seen corresponding path program 62 times [2021-05-06 06:34:38,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:38,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670054119] [2021-05-06 06:34:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:40,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7226 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-06 06:34:40,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:40,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670054119] [2021-05-06 06:34:40,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670054119] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:40,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127259478] [2021-05-06 06:34:40,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:40,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:34:40,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:40,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-06 06:34:40,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:40,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7226 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-06 06:34:40,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127259478] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:40,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:40,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-06 06:34:40,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509308432] [2021-05-06 06:34:40,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-06 06:34:40,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:40,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-06 06:34:40,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 06:34:40,752 INFO L87 Difference]: Start difference. First operand 184 states and 205 transitions. Second operand has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:43,986 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2021-05-06 06:34:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-06 06:34:43,986 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183 [2021-05-06 06:34:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:43,987 INFO L225 Difference]: With dead ends: 186 [2021-05-06 06:34:43,987 INFO L226 Difference]: Without dead ends: 186 [2021-05-06 06:34:43,988 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4692.0ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-06 06:34:43,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-05-06 06:34:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-05-06 06:34:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.1215469613259668) internal successors, (203), 181 states have internal predecessors, (203), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 207 transitions. [2021-05-06 06:34:43,990 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 207 transitions. Word has length 183 [2021-05-06 06:34:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:43,990 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 207 transitions. [2021-05-06 06:34:43,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 207 transitions. [2021-05-06 06:34:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-06 06:34:43,991 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:43,991 INFO L523 BasicCegarLoop]: trace histogram [86, 66, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:44,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:44,197 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:44,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:44,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1574429473, now seen corresponding path program 63 times [2021-05-06 06:34:44,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:44,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871237681] [2021-05-06 06:34:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2613 proven. 4422 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-06 06:34:45,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:45,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871237681] [2021-05-06 06:34:45,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871237681] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:45,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664523694] [2021-05-06 06:34:45,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:46,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-06 06:34:46,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:46,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-06 06:34:46,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:46,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:46,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2706 proven. 400 refuted. 0 times theorem prover too weak. 4291 trivial. 0 not checked. [2021-05-06 06:34:47,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664523694] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:47,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:47,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 23] total 91 [2021-05-06 06:34:47,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505522935] [2021-05-06 06:34:47,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-06 06:34:47,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:47,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-06 06:34:47,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:34:47,506 INFO L87 Difference]: Start difference. First operand 186 states and 207 transitions. Second operand has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:52,871 INFO L93 Difference]: Finished difference Result 191 states and 214 transitions. [2021-05-06 06:34:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-06 06:34:52,871 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185 [2021-05-06 06:34:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:52,872 INFO L225 Difference]: With dead ends: 191 [2021-05-06 06:34:52,872 INFO L226 Difference]: Without dead ends: 191 [2021-05-06 06:34:52,873 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 7895.6ms TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2021-05-06 06:34:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-06 06:34:52,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-06 06:34:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.1243243243243244) internal successors, (208), 185 states have internal predecessors, (208), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2021-05-06 06:34:52,875 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 185 [2021-05-06 06:34:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:52,875 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2021-05-06 06:34:52,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:52,875 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2021-05-06 06:34:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-06 06:34:52,876 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:52,876 INFO L523 BasicCegarLoop]: trace histogram [88, 67, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:53,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-06 06:34:53,100 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:53,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:53,100 INFO L82 PathProgramCache]: Analyzing trace with hash -135336330, now seen corresponding path program 64 times [2021-05-06 06:34:53,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:53,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416817668] [2021-05-06 06:34:53,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:54,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:34:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:34:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7745 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-06 06:34:54,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:34:54,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416817668] [2021-05-06 06:34:54,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416817668] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:54,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69694554] [2021-05-06 06:34:54,922 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:34:55,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:34:55,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:34:55,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-06 06:34:55,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:34:55,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:34:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7745 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-06 06:34:55,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69694554] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:34:55,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:34:55,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-06 06:34:55,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984167815] [2021-05-06 06:34:55,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-06 06:34:55,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:34:55,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-06 06:34:55,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 06:34:55,295 INFO L87 Difference]: Start difference. First operand 190 states and 212 transitions. Second operand has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:34:58,856 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2021-05-06 06:34:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 06:34:58,856 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2021-05-06 06:34:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:34:58,857 INFO L225 Difference]: With dead ends: 192 [2021-05-06 06:34:58,857 INFO L226 Difference]: Without dead ends: 192 [2021-05-06 06:34:58,865 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 4991.6ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-06 06:34:58,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-06 06:34:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-05-06 06:34:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.1229946524064172) internal successors, (210), 187 states have internal predecessors, (210), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2021-05-06 06:34:58,867 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 189 [2021-05-06 06:34:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:34:58,867 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2021-05-06 06:34:58,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:34:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2021-05-06 06:34:58,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-06 06:34:58,868 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:34:58,868 INFO L523 BasicCegarLoop]: trace histogram [89, 68, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:34:59,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-06 06:34:59,069 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:34:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:34:59,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2044548142, now seen corresponding path program 65 times [2021-05-06 06:34:59,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:34:59,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127550904] [2021-05-06 06:34:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:34:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:00,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-06 06:35:00,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:00,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127550904] [2021-05-06 06:35:00,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127550904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:00,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939246411] [2021-05-06 06:35:00,954 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:01,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-06 06:35:01,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:01,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-06 06:35:01,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:01,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-06 06:35:01,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939246411] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:01,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:01,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-06 06:35:01,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123046981] [2021-05-06 06:35:01,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-06 06:35:01,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:01,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-06 06:35:01,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-06 06:35:01,379 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:05,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:05,028 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2021-05-06 06:35:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-06 06:35:05,029 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2021-05-06 06:35:05,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:05,029 INFO L225 Difference]: With dead ends: 194 [2021-05-06 06:35:05,029 INFO L226 Difference]: Without dead ends: 194 [2021-05-06 06:35:05,030 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 5116.7ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-06 06:35:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-05-06 06:35:05,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-05-06 06:35:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.1216931216931216) internal successors, (212), 189 states have internal predecessors, (212), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:05,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2021-05-06 06:35:05,032 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 191 [2021-05-06 06:35:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:05,032 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2021-05-06 06:35:05,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2021-05-06 06:35:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-06 06:35:05,032 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:05,033 INFO L523 BasicCegarLoop]: trace histogram [90, 69, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:05,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-06 06:35:05,233 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:05,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:05,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1448903214, now seen corresponding path program 66 times [2021-05-06 06:35:05,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:05,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470381919] [2021-05-06 06:35:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8101 backedges. 2870 proven. 4830 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-06 06:35:07,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:07,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470381919] [2021-05-06 06:35:07,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470381919] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:07,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262721858] [2021-05-06 06:35:07,152 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:07,298 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-06 06:35:07,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:07,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-06 06:35:07,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:07,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:07,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8101 backedges. 2967 proven. 441 refuted. 0 times theorem prover too weak. 4693 trivial. 0 not checked. [2021-05-06 06:35:08,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262721858] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:08,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:08,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 24] total 95 [2021-05-06 06:35:08,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193599481] [2021-05-06 06:35:08,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-06 06:35:08,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:08,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-06 06:35:08,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-06 06:35:08,970 INFO L87 Difference]: Start difference. First operand 194 states and 216 transitions. Second operand has 95 states, 95 states have (on average 2.094736842105263) internal successors, (199), 94 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:14,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:14,741 INFO L93 Difference]: Finished difference Result 199 states and 223 transitions. [2021-05-06 06:35:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-06 06:35:14,742 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.094736842105263) internal successors, (199), 94 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2021-05-06 06:35:14,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:14,742 INFO L225 Difference]: With dead ends: 199 [2021-05-06 06:35:14,742 INFO L226 Difference]: Without dead ends: 199 [2021-05-06 06:35:14,744 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 8643.2ms TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2021-05-06 06:35:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-06 06:35:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-06 06:35:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.1243523316062176) internal successors, (217), 193 states have internal predecessors, (217), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-05-06 06:35:14,746 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 193 [2021-05-06 06:35:14,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:14,746 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-05-06 06:35:14,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.094736842105263) internal successors, (199), 94 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-05-06 06:35:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-06 06:35:14,747 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:14,747 INFO L523 BasicCegarLoop]: trace histogram [92, 70, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:14,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:14,971 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:14,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:14,971 INFO L82 PathProgramCache]: Analyzing trace with hash -913104891, now seen corresponding path program 67 times [2021-05-06 06:35:14,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:14,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929557184] [2021-05-06 06:35:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:16,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8465 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-06 06:35:16,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:16,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929557184] [2021-05-06 06:35:16,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929557184] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:16,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844466777] [2021-05-06 06:35:16,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:17,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-06 06:35:17,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:17,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8465 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-06 06:35:17,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844466777] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:17,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:17,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-06 06:35:17,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507819178] [2021-05-06 06:35:17,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-06 06:35:17,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:17,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-06 06:35:17,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 06:35:17,301 INFO L87 Difference]: Start difference. First operand 198 states and 221 transitions. Second operand has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:21,106 INFO L93 Difference]: Finished difference Result 200 states and 223 transitions. [2021-05-06 06:35:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-06 06:35:21,107 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2021-05-06 06:35:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:21,107 INFO L225 Difference]: With dead ends: 200 [2021-05-06 06:35:21,107 INFO L226 Difference]: Without dead ends: 200 [2021-05-06 06:35:21,108 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 5317.7ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-06 06:35:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-06 06:35:21,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-06 06:35:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.123076923076923) internal successors, (219), 195 states have internal predecessors, (219), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:21,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 223 transitions. [2021-05-06 06:35:21,110 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 223 transitions. Word has length 197 [2021-05-06 06:35:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:21,110 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 223 transitions. [2021-05-06 06:35:21,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 223 transitions. [2021-05-06 06:35:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-06 06:35:21,111 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:21,111 INFO L523 BasicCegarLoop]: trace histogram [93, 71, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:21,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:21,311 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:21,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1129431393, now seen corresponding path program 68 times [2021-05-06 06:35:21,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:21,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551587824] [2021-05-06 06:35:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:23,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-06 06:35:23,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:23,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551587824] [2021-05-06 06:35:23,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551587824] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:23,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537324764] [2021-05-06 06:35:23,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:23,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:35:23,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:23,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-06 06:35:23,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:23,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-06 06:35:23,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537324764] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:23,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:23,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-06 06:35:23,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93249001] [2021-05-06 06:35:23,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-06 06:35:23,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:23,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-06 06:35:23,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 06:35:23,740 INFO L87 Difference]: Start difference. First operand 200 states and 223 transitions. Second operand has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:27,451 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2021-05-06 06:35:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 06:35:27,452 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199 [2021-05-06 06:35:27,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:27,452 INFO L225 Difference]: With dead ends: 202 [2021-05-06 06:35:27,452 INFO L226 Difference]: Without dead ends: 202 [2021-05-06 06:35:27,453 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 5439.4ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-06 06:35:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-06 06:35:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-05-06 06:35:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.1218274111675126) internal successors, (221), 197 states have internal predecessors, (221), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 225 transitions. [2021-05-06 06:35:27,458 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 225 transitions. Word has length 199 [2021-05-06 06:35:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:27,459 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 225 transitions. [2021-05-06 06:35:27,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 225 transitions. [2021-05-06 06:35:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-06 06:35:27,459 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:27,460 INFO L523 BasicCegarLoop]: trace histogram [94, 72, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:27,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:27,681 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:27,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:27,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1206746045, now seen corresponding path program 69 times [2021-05-06 06:35:27,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:27,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804747499] [2021-05-06 06:35:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:29,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8837 backedges. 3139 proven. 5256 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-06 06:35:29,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:29,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804747499] [2021-05-06 06:35:29,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804747499] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:29,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325937298] [2021-05-06 06:35:29,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:29,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-06 06:35:29,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:29,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 06:35:29,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:30,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:30,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8837 backedges. 3240 proven. 484 refuted. 0 times theorem prover too weak. 5113 trivial. 0 not checked. [2021-05-06 06:35:31,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325937298] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:31,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:31,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 25] total 99 [2021-05-06 06:35:31,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122786135] [2021-05-06 06:35:31,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-06 06:35:31,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:31,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-06 06:35:31,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:35:31,560 INFO L87 Difference]: Start difference. First operand 202 states and 225 transitions. Second operand has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 98 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:37,807 INFO L93 Difference]: Finished difference Result 207 states and 232 transitions. [2021-05-06 06:35:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-06 06:35:37,807 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 98 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2021-05-06 06:35:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:37,808 INFO L225 Difference]: With dead ends: 207 [2021-05-06 06:35:37,808 INFO L226 Difference]: Without dead ends: 207 [2021-05-06 06:35:37,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4632 ImplicationChecksByTransitivity, 9233.4ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-06 06:35:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-06 06:35:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-06 06:35:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.1243781094527363) internal successors, (226), 201 states have internal predecessors, (226), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 230 transitions. [2021-05-06 06:35:37,813 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 230 transitions. Word has length 201 [2021-05-06 06:35:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:37,813 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 230 transitions. [2021-05-06 06:35:37,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 98 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 230 transitions. [2021-05-06 06:35:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-06 06:35:37,814 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:37,814 INFO L523 BasicCegarLoop]: trace histogram [96, 73, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:38,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-05-06 06:35:38,028 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:38,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:38,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1134286292, now seen corresponding path program 70 times [2021-05-06 06:35:38,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:38,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025842786] [2021-05-06 06:35:38,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:40,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9217 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 06:35:40,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:40,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025842786] [2021-05-06 06:35:40,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025842786] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:40,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128590355] [2021-05-06 06:35:40,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:40,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:35:40,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:40,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-06 06:35:40,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:40,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9217 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 06:35:40,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128590355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:40,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:40,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-06 06:35:40,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358151897] [2021-05-06 06:35:40,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-06 06:35:40,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:40,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-06 06:35:40,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 06:35:40,670 INFO L87 Difference]: Start difference. First operand 206 states and 230 transitions. Second operand has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:44,545 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2021-05-06 06:35:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-06 06:35:44,545 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2021-05-06 06:35:44,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:44,546 INFO L225 Difference]: With dead ends: 208 [2021-05-06 06:35:44,546 INFO L226 Difference]: Without dead ends: 208 [2021-05-06 06:35:44,547 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 5846.0ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-06 06:35:44,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-05-06 06:35:44,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-05-06 06:35:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.1231527093596059) internal successors, (228), 203 states have internal predecessors, (228), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 232 transitions. [2021-05-06 06:35:44,549 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 232 transitions. Word has length 205 [2021-05-06 06:35:44,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:44,549 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 232 transitions. [2021-05-06 06:35:44,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:44,549 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 232 transitions. [2021-05-06 06:35:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-06 06:35:44,550 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:44,550 INFO L523 BasicCegarLoop]: trace histogram [97, 74, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:44,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:44,774 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:44,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1908497200, now seen corresponding path program 71 times [2021-05-06 06:35:44,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:44,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106924429] [2021-05-06 06:35:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9410 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 06:35:46,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:46,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106924429] [2021-05-06 06:35:46,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106924429] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:46,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066682335] [2021-05-06 06:35:46,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:47,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 98 check-sat command(s) [2021-05-06 06:35:47,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:47,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-06 06:35:47,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:47,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9410 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 06:35:47,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066682335] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:47,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:47,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-06 06:35:47,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87115970] [2021-05-06 06:35:47,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-06 06:35:47,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:47,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-06 06:35:47,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 06:35:47,421 INFO L87 Difference]: Start difference. First operand 208 states and 232 transitions. Second operand has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:35:51,577 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2021-05-06 06:35:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-06 06:35:51,577 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207 [2021-05-06 06:35:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:35:51,578 INFO L225 Difference]: With dead ends: 210 [2021-05-06 06:35:51,578 INFO L226 Difference]: Without dead ends: 210 [2021-05-06 06:35:51,579 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 5868.1ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-06 06:35:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-06 06:35:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-05-06 06:35:51,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.1219512195121952) internal successors, (230), 205 states have internal predecessors, (230), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2021-05-06 06:35:51,581 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 207 [2021-05-06 06:35:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:35:51,581 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2021-05-06 06:35:51,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:35:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2021-05-06 06:35:51,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-06 06:35:51,582 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:35:51,582 INFO L523 BasicCegarLoop]: trace histogram [98, 75, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:35:51,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:51,783 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:35:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:35:51,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1399129716, now seen corresponding path program 72 times [2021-05-06 06:35:51,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:35:51,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106253675] [2021-05-06 06:35:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:35:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:53,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:35:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:35:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9605 backedges. 3420 proven. 5700 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 06:35:53,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:35:53,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106253675] [2021-05-06 06:35:53,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106253675] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:53,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722287209] [2021-05-06 06:35:53,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:35:54,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-06 06:35:54,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:35:54,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-06 06:35:54,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:35:54,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:54,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:35:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9605 backedges. 3525 proven. 529 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2021-05-06 06:35:55,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722287209] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:35:55,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:35:55,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 26] total 103 [2021-05-06 06:35:55,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885854664] [2021-05-06 06:35:55,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-06 06:35:55,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:35:55,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-06 06:35:55,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-06 06:35:55,984 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand has 103 states, 103 states have (on average 2.087378640776699) internal successors, (215), 102 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:02,744 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2021-05-06 06:36:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-06 06:36:02,744 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.087378640776699) internal successors, (215), 102 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2021-05-06 06:36:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:02,745 INFO L225 Difference]: With dead ends: 215 [2021-05-06 06:36:02,745 INFO L226 Difference]: Without dead ends: 215 [2021-05-06 06:36:02,747 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5025 ImplicationChecksByTransitivity, 9904.7ms TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2021-05-06 06:36:02,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-06 06:36:02,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-05-06 06:36:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.124401913875598) internal successors, (235), 209 states have internal predecessors, (235), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:02,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 239 transitions. [2021-05-06 06:36:02,748 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 239 transitions. Word has length 209 [2021-05-06 06:36:02,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:02,748 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 239 transitions. [2021-05-06 06:36:02,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.087378640776699) internal successors, (215), 102 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 239 transitions. [2021-05-06 06:36:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-06 06:36:02,749 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:02,749 INFO L523 BasicCegarLoop]: trace histogram [100, 76, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:02,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:02,950 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:02,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:02,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1886584861, now seen corresponding path program 73 times [2021-05-06 06:36:02,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:02,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416952902] [2021-05-06 06:36:02,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:05,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10001 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-06 06:36:05,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:05,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416952902] [2021-05-06 06:36:05,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416952902] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:05,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851560437] [2021-05-06 06:36:05,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:05,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-06 06:36:05,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:05,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10001 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-06 06:36:05,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851560437] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:05,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:05,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-06 06:36:05,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018865349] [2021-05-06 06:36:05,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-06 06:36:05,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:05,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-06 06:36:05,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-06 06:36:05,684 INFO L87 Difference]: Start difference. First operand 214 states and 239 transitions. Second operand has 81 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 80 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:10,984 INFO L93 Difference]: Finished difference Result 216 states and 241 transitions. [2021-05-06 06:36:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-06 06:36:10,985 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 80 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-06 06:36:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:10,986 INFO L225 Difference]: With dead ends: 216 [2021-05-06 06:36:10,986 INFO L226 Difference]: Without dead ends: 216 [2021-05-06 06:36:10,998 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 6976.8ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-06 06:36:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-05-06 06:36:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-05-06 06:36:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.1232227488151658) internal successors, (237), 211 states have internal predecessors, (237), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 241 transitions. [2021-05-06 06:36:11,000 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 241 transitions. Word has length 213 [2021-05-06 06:36:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:11,001 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 241 transitions. [2021-05-06 06:36:11,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 80 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:11,001 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 241 transitions. [2021-05-06 06:36:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-06 06:36:11,002 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:11,002 INFO L523 BasicCegarLoop]: trace histogram [101, 77, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:11,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-06 06:36:11,221 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:11,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:11,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1628083905, now seen corresponding path program 74 times [2021-05-06 06:36:11,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:11,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216602622] [2021-05-06 06:36:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:13,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10202 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-06 06:36:13,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:13,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216602622] [2021-05-06 06:36:13,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216602622] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:13,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089483626] [2021-05-06 06:36:13,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:14,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:36:14,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:14,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-06 06:36:14,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:14,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10202 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-06 06:36:14,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089483626] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:14,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:14,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-06 06:36:14,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950538370] [2021-05-06 06:36:14,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-06 06:36:14,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:14,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-06 06:36:14,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 06:36:14,375 INFO L87 Difference]: Start difference. First operand 216 states and 241 transitions. Second operand has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:19,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:19,542 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2021-05-06 06:36:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-06 06:36:19,542 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2021-05-06 06:36:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:19,543 INFO L225 Difference]: With dead ends: 218 [2021-05-06 06:36:19,543 INFO L226 Difference]: Without dead ends: 218 [2021-05-06 06:36:19,543 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 7283.2ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-06 06:36:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-06 06:36:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-06 06:36:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.1220657276995305) internal successors, (239), 213 states have internal predecessors, (239), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 243 transitions. [2021-05-06 06:36:19,545 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 243 transitions. Word has length 215 [2021-05-06 06:36:19,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:19,545 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 243 transitions. [2021-05-06 06:36:19,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 243 transitions. [2021-05-06 06:36:19,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-06 06:36:19,546 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:19,546 INFO L523 BasicCegarLoop]: trace histogram [102, 78, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:19,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:19,747 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:19,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1978198939, now seen corresponding path program 75 times [2021-05-06 06:36:19,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:19,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011455991] [2021-05-06 06:36:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10405 backedges. 3713 proven. 6162 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-06 06:36:22,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:22,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011455991] [2021-05-06 06:36:22,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011455991] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:22,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202241698] [2021-05-06 06:36:22,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:22,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-06 06:36:22,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:22,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 06:36:22,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:22,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:22,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:23,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:24,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:24,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:24,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10405 backedges. 3822 proven. 576 refuted. 0 times theorem prover too weak. 6007 trivial. 0 not checked. [2021-05-06 06:36:24,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202241698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:24,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:24,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 27] total 107 [2021-05-06 06:36:24,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429571393] [2021-05-06 06:36:24,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-06 06:36:24,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:24,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-06 06:36:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 06:36:24,220 INFO L87 Difference]: Start difference. First operand 218 states and 243 transitions. Second operand has 107 states, 107 states have (on average 2.0841121495327104) internal successors, (223), 106 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:31,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:31,379 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2021-05-06 06:36:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-06 06:36:31,380 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0841121495327104) internal successors, (223), 106 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-06 06:36:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:31,381 INFO L225 Difference]: With dead ends: 223 [2021-05-06 06:36:31,381 INFO L226 Difference]: Without dead ends: 223 [2021-05-06 06:36:31,382 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 10665.4ms TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2021-05-06 06:36:31,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-06 06:36:31,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-05-06 06:36:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.1244239631336406) internal successors, (244), 217 states have internal predecessors, (244), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:31,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 248 transitions. [2021-05-06 06:36:31,384 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 248 transitions. Word has length 217 [2021-05-06 06:36:31,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:31,384 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 248 transitions. [2021-05-06 06:36:31,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.0841121495327104) internal successors, (223), 106 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 248 transitions. [2021-05-06 06:36:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-06 06:36:31,385 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:31,385 INFO L523 BasicCegarLoop]: trace histogram [104, 79, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:31,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-06 06:36:31,601 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:31,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1313960398, now seen corresponding path program 76 times [2021-05-06 06:36:31,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:31,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922401697] [2021-05-06 06:36:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10817 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-06 06:36:34,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:34,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922401697] [2021-05-06 06:36:34,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922401697] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:34,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290827757] [2021-05-06 06:36:34,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:34,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:36:34,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:34,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-06 06:36:34,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:34,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10817 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-06 06:36:34,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290827757] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:34,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:34,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-06 06:36:34,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827387863] [2021-05-06 06:36:34,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-06 06:36:34,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:34,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-06 06:36:34,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 06:36:34,514 INFO L87 Difference]: Start difference. First operand 222 states and 248 transitions. Second operand has 84 states, 84 states have (on average 2.0833333333333335) internal successors, (175), 83 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:39,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:39,050 INFO L93 Difference]: Finished difference Result 224 states and 250 transitions. [2021-05-06 06:36:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 06:36:39,051 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0833333333333335) internal successors, (175), 83 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2021-05-06 06:36:39,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:39,051 INFO L225 Difference]: With dead ends: 224 [2021-05-06 06:36:39,051 INFO L226 Difference]: Without dead ends: 224 [2021-05-06 06:36:39,052 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 6621.3ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-06 06:36:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-05-06 06:36:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-05-06 06:36:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.1232876712328768) internal successors, (246), 219 states have internal predecessors, (246), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 250 transitions. [2021-05-06 06:36:39,054 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 250 transitions. Word has length 221 [2021-05-06 06:36:39,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:39,054 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 250 transitions. [2021-05-06 06:36:39,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0833333333333335) internal successors, (175), 83 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:39,054 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 250 transitions. [2021-05-06 06:36:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-06 06:36:39,055 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:39,055 INFO L523 BasicCegarLoop]: trace histogram [105, 80, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:39,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:39,255 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:39,256 INFO L82 PathProgramCache]: Analyzing trace with hash 859167630, now seen corresponding path program 77 times [2021-05-06 06:36:39,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:39,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398731202] [2021-05-06 06:36:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:41,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-06 06:36:41,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:41,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398731202] [2021-05-06 06:36:41,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398731202] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:41,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354936137] [2021-05-06 06:36:41,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:41,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2021-05-06 06:36:41,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:41,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-06 06:36:41,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:41,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:41,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-06 06:36:42,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354936137] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:42,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:42,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-06 06:36:42,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861286513] [2021-05-06 06:36:42,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-06 06:36:42,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:42,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-06 06:36:42,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-06 06:36:42,259 INFO L87 Difference]: Start difference. First operand 224 states and 250 transitions. Second operand has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:46,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:46,977 INFO L93 Difference]: Finished difference Result 226 states and 252 transitions. [2021-05-06 06:36:46,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-06 06:36:46,978 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223 [2021-05-06 06:36:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:46,978 INFO L225 Difference]: With dead ends: 226 [2021-05-06 06:36:46,978 INFO L226 Difference]: Without dead ends: 226 [2021-05-06 06:36:46,979 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 6728.9ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-06 06:36:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-05-06 06:36:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-05-06 06:36:46,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.1221719457013575) internal successors, (248), 221 states have internal predecessors, (248), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 252 transitions. [2021-05-06 06:36:46,982 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 252 transitions. Word has length 223 [2021-05-06 06:36:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:46,982 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 252 transitions. [2021-05-06 06:36:46,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 252 transitions. [2021-05-06 06:36:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-06 06:36:46,983 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:46,983 INFO L523 BasicCegarLoop]: trace histogram [106, 81, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:36:47,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:47,205 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:36:47,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:36:47,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1881096682, now seen corresponding path program 78 times [2021-05-06 06:36:47,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:36:47,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963588972] [2021-05-06 06:36:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:36:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:49,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:36:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:36:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 4018 proven. 6642 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-06 06:36:49,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:36:49,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963588972] [2021-05-06 06:36:49,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963588972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:49,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807321898] [2021-05-06 06:36:49,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:36:49,961 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-06 06:36:49,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:36:49,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 06:36:49,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:36:50,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:50,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:51,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:36:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 4131 proven. 625 refuted. 0 times theorem prover too weak. 6481 trivial. 0 not checked. [2021-05-06 06:36:52,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807321898] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:36:52,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:36:52,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 28] total 111 [2021-05-06 06:36:52,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916066939] [2021-05-06 06:36:52,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-06 06:36:52,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:36:52,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-06 06:36:52,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-06 06:36:52,074 INFO L87 Difference]: Start difference. First operand 226 states and 252 transitions. Second operand has 111 states, 111 states have (on average 2.081081081081081) internal successors, (231), 110 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:36:59,893 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2021-05-06 06:36:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-06 06:36:59,893 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.081081081081081) internal successors, (231), 110 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2021-05-06 06:36:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:36:59,894 INFO L225 Difference]: With dead ends: 231 [2021-05-06 06:36:59,894 INFO L226 Difference]: Without dead ends: 231 [2021-05-06 06:36:59,895 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5859 ImplicationChecksByTransitivity, 11431.7ms TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2021-05-06 06:36:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-05-06 06:36:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-05-06 06:36:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.1244444444444444) internal successors, (253), 225 states have internal predecessors, (253), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:59,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2021-05-06 06:36:59,898 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 225 [2021-05-06 06:36:59,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:36:59,898 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2021-05-06 06:36:59,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.081081081081081) internal successors, (231), 110 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:36:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2021-05-06 06:36:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-06 06:36:59,899 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:36:59,899 INFO L523 BasicCegarLoop]: trace histogram [108, 82, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:00,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:00,123 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:00,123 INFO L82 PathProgramCache]: Analyzing trace with hash -401837887, now seen corresponding path program 79 times [2021-05-06 06:37:00,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:00,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000612669] [2021-05-06 06:37:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:02,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11665 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-06 06:37:02,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:02,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000612669] [2021-05-06 06:37:02,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000612669] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:02,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617196543] [2021-05-06 06:37:02,744 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:02,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-06 06:37:02,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:02,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:02,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11665 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-06 06:37:03,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617196543] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:03,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:03,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-06 06:37:03,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574493186] [2021-05-06 06:37:03,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-06 06:37:03,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:03,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-06 06:37:03,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 06:37:03,185 INFO L87 Difference]: Start difference. First operand 230 states and 257 transitions. Second operand has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:07,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:07,965 INFO L93 Difference]: Finished difference Result 232 states and 259 transitions. [2021-05-06 06:37:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-06 06:37:07,966 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-06 06:37:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:07,967 INFO L225 Difference]: With dead ends: 232 [2021-05-06 06:37:07,967 INFO L226 Difference]: Without dead ends: 232 [2021-05-06 06:37:07,967 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 7022.6ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-06 06:37:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-06 06:37:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-05-06 06:37:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 1.1233480176211454) internal successors, (255), 227 states have internal predecessors, (255), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 259 transitions. [2021-05-06 06:37:07,969 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 259 transitions. Word has length 229 [2021-05-06 06:37:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:07,970 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 259 transitions. [2021-05-06 06:37:07,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:07,970 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 259 transitions. [2021-05-06 06:37:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-06 06:37:07,970 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:07,971 INFO L523 BasicCegarLoop]: trace histogram [109, 83, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:08,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:08,171 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:08,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:08,172 INFO L82 PathProgramCache]: Analyzing trace with hash -795958755, now seen corresponding path program 80 times [2021-05-06 06:37:08,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:08,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719605320] [2021-05-06 06:37:08,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:10,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 11882 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-06 06:37:10,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:10,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719605320] [2021-05-06 06:37:10,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719605320] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:10,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475362696] [2021-05-06 06:37:10,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:10,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:37:10,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:10,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-06 06:37:10,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:10,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:10,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 11882 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-06 06:37:11,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475362696] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:11,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:11,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-06 06:37:11,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484394917] [2021-05-06 06:37:11,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-06 06:37:11,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:11,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-06 06:37:11,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 06:37:11,300 INFO L87 Difference]: Start difference. First operand 232 states and 259 transitions. Second operand has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:16,135 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2021-05-06 06:37:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 06:37:16,136 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2021-05-06 06:37:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:16,136 INFO L225 Difference]: With dead ends: 234 [2021-05-06 06:37:16,136 INFO L226 Difference]: Without dead ends: 234 [2021-05-06 06:37:16,137 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 7134.0ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-06 06:37:16,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-05-06 06:37:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-05-06 06:37:16,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.1222707423580787) internal successors, (257), 229 states have internal predecessors, (257), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 261 transitions. [2021-05-06 06:37:16,140 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 261 transitions. Word has length 231 [2021-05-06 06:37:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:16,140 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 261 transitions. [2021-05-06 06:37:16,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 261 transitions. [2021-05-06 06:37:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-06 06:37:16,141 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:16,141 INFO L523 BasicCegarLoop]: trace histogram [110, 84, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:16,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:16,342 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:16,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:16,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1588990855, now seen corresponding path program 81 times [2021-05-06 06:37:16,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:16,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133884867] [2021-05-06 06:37:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:19,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12101 backedges. 4335 proven. 7140 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-06 06:37:19,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:19,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133884867] [2021-05-06 06:37:19,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133884867] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:19,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228544505] [2021-05-06 06:37:19,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:19,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-06 06:37:19,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:19,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-06 06:37:19,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:19,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:19,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:20,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12101 backedges. 4452 proven. 676 refuted. 0 times theorem prover too weak. 6973 trivial. 0 not checked. [2021-05-06 06:37:21,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228544505] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:21,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:21,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 29] total 115 [2021-05-06 06:37:21,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757816112] [2021-05-06 06:37:21,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-06 06:37:21,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:21,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-06 06:37:21,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:37:21,504 INFO L87 Difference]: Start difference. First operand 234 states and 261 transitions. Second operand has 115 states, 115 states have (on average 2.0782608695652174) internal successors, (239), 114 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:29,727 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2021-05-06 06:37:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-06 06:37:29,728 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0782608695652174) internal successors, (239), 114 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 233 [2021-05-06 06:37:29,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:29,728 INFO L225 Difference]: With dead ends: 239 [2021-05-06 06:37:29,729 INFO L226 Difference]: Without dead ends: 239 [2021-05-06 06:37:29,731 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6300 ImplicationChecksByTransitivity, 12186.7ms TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2021-05-06 06:37:29,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-05-06 06:37:29,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-05-06 06:37:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.1244635193133048) internal successors, (262), 233 states have internal predecessors, (262), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-05-06 06:37:29,733 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 233 [2021-05-06 06:37:29,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:29,734 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-05-06 06:37:29,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.0782608695652174) internal successors, (239), 114 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:29,734 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-05-06 06:37:29,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-06 06:37:29,735 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:29,735 INFO L523 BasicCegarLoop]: trace histogram [112, 85, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:29,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:29,935 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:29,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:29,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1232508816, now seen corresponding path program 82 times [2021-05-06 06:37:29,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:29,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92231598] [2021-05-06 06:37:29,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:32,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12545 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-06 06:37:32,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:32,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92231598] [2021-05-06 06:37:32,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92231598] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:32,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431509019] [2021-05-06 06:37:32,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:32,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:37:32,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:32,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-06 06:37:32,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:32,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:32,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12545 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-06 06:37:33,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431509019] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:33,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:33,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-06 06:37:33,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793583639] [2021-05-06 06:37:33,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-06 06:37:33,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:33,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-06 06:37:33,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-06 06:37:33,189 INFO L87 Difference]: Start difference. First operand 238 states and 266 transitions. Second operand has 90 states, 90 states have (on average 2.077777777777778) internal successors, (187), 89 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:38,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:38,270 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2021-05-06 06:37:38,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-06 06:37:38,270 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.077777777777778) internal successors, (187), 89 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2021-05-06 06:37:38,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:38,271 INFO L225 Difference]: With dead ends: 240 [2021-05-06 06:37:38,271 INFO L226 Difference]: Without dead ends: 240 [2021-05-06 06:37:38,272 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 7471.8ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-06 06:37:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-06 06:37:38,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-05-06 06:37:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.123404255319149) internal successors, (264), 235 states have internal predecessors, (264), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 268 transitions. [2021-05-06 06:37:38,274 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 268 transitions. Word has length 237 [2021-05-06 06:37:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:38,274 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 268 transitions. [2021-05-06 06:37:38,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.077777777777778) internal successors, (187), 89 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 268 transitions. [2021-05-06 06:37:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-06 06:37:38,275 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:38,275 INFO L523 BasicCegarLoop]: trace histogram [113, 86, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:38,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:38,489 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:38,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:38,489 INFO L82 PathProgramCache]: Analyzing trace with hash -238048020, now seen corresponding path program 83 times [2021-05-06 06:37:38,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:38,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928007760] [2021-05-06 06:37:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:41,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 12770 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-06 06:37:41,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:41,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928007760] [2021-05-06 06:37:41,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928007760] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:41,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534157614] [2021-05-06 06:37:41,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:41,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-06 06:37:41,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:41,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-06 06:37:41,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:41,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12770 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-06 06:37:41,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534157614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:41,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:41,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-06 06:37:41,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744497710] [2021-05-06 06:37:41,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-06 06:37:41,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:41,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-06 06:37:41,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 06:37:41,860 INFO L87 Difference]: Start difference. First operand 240 states and 268 transitions. Second operand has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:37:47,051 INFO L93 Difference]: Finished difference Result 242 states and 270 transitions. [2021-05-06 06:37:47,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-06 06:37:47,051 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2021-05-06 06:37:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:37:47,052 INFO L225 Difference]: With dead ends: 242 [2021-05-06 06:37:47,052 INFO L226 Difference]: Without dead ends: 242 [2021-05-06 06:37:47,053 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 7636.2ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-06 06:37:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-05-06 06:37:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-05-06 06:37:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.1223628691983123) internal successors, (266), 237 states have internal predecessors, (266), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 270 transitions. [2021-05-06 06:37:47,055 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 270 transitions. Word has length 239 [2021-05-06 06:37:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:37:47,055 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 270 transitions. [2021-05-06 06:37:47,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:37:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 270 transitions. [2021-05-06 06:37:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-06 06:37:47,056 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:37:47,056 INFO L523 BasicCegarLoop]: trace histogram [114, 87, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:37:47,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-06 06:37:47,256 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:37:47,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:37:47,257 INFO L82 PathProgramCache]: Analyzing trace with hash -398927032, now seen corresponding path program 84 times [2021-05-06 06:37:47,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:37:47,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346770134] [2021-05-06 06:37:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:37:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:37:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:37:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12997 backedges. 4664 proven. 7656 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-06 06:37:50,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:37:50,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346770134] [2021-05-06 06:37:50,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346770134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:50,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369661940] [2021-05-06 06:37:50,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:37:50,378 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-06 06:37:50,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:37:50,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-06 06:37:50,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:37:50,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:50,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:51,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:37:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12997 backedges. 4785 proven. 729 refuted. 0 times theorem prover too weak. 7483 trivial. 0 not checked. [2021-05-06 06:37:52,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369661940] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:37:52,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:37:52,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 30] total 119 [2021-05-06 06:37:52,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605801192] [2021-05-06 06:37:52,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-06 06:37:52,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:37:52,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-06 06:37:52,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2021-05-06 06:37:52,775 INFO L87 Difference]: Start difference. First operand 242 states and 270 transitions. Second operand has 119 states, 119 states have (on average 2.0756302521008405) internal successors, (247), 118 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:01,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:01,442 INFO L93 Difference]: Finished difference Result 247 states and 277 transitions. [2021-05-06 06:38:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-06 06:38:01,443 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.0756302521008405) internal successors, (247), 118 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 241 [2021-05-06 06:38:01,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:01,443 INFO L225 Difference]: With dead ends: 247 [2021-05-06 06:38:01,443 INFO L226 Difference]: Without dead ends: 247 [2021-05-06 06:38:01,445 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6757 ImplicationChecksByTransitivity, 13000.2ms TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2021-05-06 06:38:01,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-06 06:38:01,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2021-05-06 06:38:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 241 states have (on average 1.1244813278008299) internal successors, (271), 241 states have internal predecessors, (271), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 275 transitions. [2021-05-06 06:38:01,447 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 275 transitions. Word has length 241 [2021-05-06 06:38:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:01,447 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 275 transitions. [2021-05-06 06:38:01,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 119 states, 119 states have (on average 2.0756302521008405) internal successors, (247), 118 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:01,447 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2021-05-06 06:38:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-06 06:38:01,448 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:01,448 INFO L523 BasicCegarLoop]: trace histogram [116, 88, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:01,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:01,648 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:01,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:01,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1535053153, now seen corresponding path program 85 times [2021-05-06 06:38:01,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:01,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201359743] [2021-05-06 06:38:01,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:04,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13457 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-06 06:38:04,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:04,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201359743] [2021-05-06 06:38:04,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201359743] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:04,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844827301] [2021-05-06 06:38:04,678 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:04,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-06 06:38:04,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:04,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:04,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13457 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-06 06:38:05,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844827301] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:05,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:05,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-06 06:38:05,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930797404] [2021-05-06 06:38:05,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-06 06:38:05,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:05,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-06 06:38:05,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-06 06:38:05,135 INFO L87 Difference]: Start difference. First operand 246 states and 275 transitions. Second operand has 93 states, 93 states have (on average 2.075268817204301) internal successors, (193), 92 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:10,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:10,545 INFO L93 Difference]: Finished difference Result 248 states and 277 transitions. [2021-05-06 06:38:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-06 06:38:10,546 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.075268817204301) internal successors, (193), 92 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 245 [2021-05-06 06:38:10,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:10,546 INFO L225 Difference]: With dead ends: 248 [2021-05-06 06:38:10,546 INFO L226 Difference]: Without dead ends: 248 [2021-05-06 06:38:10,548 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 7984.1ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-06 06:38:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-06 06:38:10,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-05-06 06:38:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 243 states have (on average 1.123456790123457) internal successors, (273), 243 states have internal predecessors, (273), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 277 transitions. [2021-05-06 06:38:10,549 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 277 transitions. Word has length 245 [2021-05-06 06:38:10,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:10,550 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 277 transitions. [2021-05-06 06:38:10,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.075268817204301) internal successors, (193), 92 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:10,550 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 277 transitions. [2021-05-06 06:38:10,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-06 06:38:10,550 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:10,550 INFO L523 BasicCegarLoop]: trace histogram [117, 89, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:10,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-06 06:38:10,751 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:10,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:10,751 INFO L82 PathProgramCache]: Analyzing trace with hash -913511429, now seen corresponding path program 86 times [2021-05-06 06:38:10,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:10,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796531284] [2021-05-06 06:38:10,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:13,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-06 06:38:13,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:13,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796531284] [2021-05-06 06:38:13,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796531284] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:13,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3066549] [2021-05-06 06:38:13,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:13,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:38:13,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-06 06:38:13,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:13,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:13,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-06 06:38:14,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3066549] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:14,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:14,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-06 06:38:14,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076782137] [2021-05-06 06:38:14,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-06 06:38:14,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:14,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-06 06:38:14,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 06:38:14,283 INFO L87 Difference]: Start difference. First operand 248 states and 277 transitions. Second operand has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:19,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:19,742 INFO L93 Difference]: Finished difference Result 250 states and 279 transitions. [2021-05-06 06:38:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-06 06:38:19,742 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 247 [2021-05-06 06:38:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:19,743 INFO L225 Difference]: With dead ends: 250 [2021-05-06 06:38:19,743 INFO L226 Difference]: Without dead ends: 250 [2021-05-06 06:38:19,744 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 8150.8ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-06 06:38:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-06 06:38:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-05-06 06:38:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 245 states have (on average 1.1224489795918366) internal successors, (275), 245 states have internal predecessors, (275), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:19,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 279 transitions. [2021-05-06 06:38:19,747 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 279 transitions. Word has length 247 [2021-05-06 06:38:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:19,747 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 279 transitions. [2021-05-06 06:38:19,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 279 transitions. [2021-05-06 06:38:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-06 06:38:19,748 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:19,748 INFO L523 BasicCegarLoop]: trace histogram [118, 90, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:19,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:19,965 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:19,965 INFO L82 PathProgramCache]: Analyzing trace with hash -612368809, now seen corresponding path program 87 times [2021-05-06 06:38:19,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:19,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406113859] [2021-05-06 06:38:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:23,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13925 backedges. 5005 proven. 8190 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-06 06:38:23,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:23,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406113859] [2021-05-06 06:38:23,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406113859] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:23,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389058307] [2021-05-06 06:38:23,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:23,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-06 06:38:23,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:23,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 06:38:23,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:23,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:23,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:24,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13925 backedges. 5130 proven. 784 refuted. 0 times theorem prover too weak. 8011 trivial. 0 not checked. [2021-05-06 06:38:25,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389058307] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:25,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:25,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 31] total 123 [2021-05-06 06:38:25,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163949351] [2021-05-06 06:38:25,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-06 06:38:25,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:25,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-06 06:38:25,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2021-05-06 06:38:25,799 INFO L87 Difference]: Start difference. First operand 250 states and 279 transitions. Second operand has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 122 states have internal predecessors, (255), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:35,083 INFO L93 Difference]: Finished difference Result 255 states and 286 transitions. [2021-05-06 06:38:35,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-06 06:38:35,083 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 122 states have internal predecessors, (255), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 249 [2021-05-06 06:38:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:35,084 INFO L225 Difference]: With dead ends: 255 [2021-05-06 06:38:35,084 INFO L226 Difference]: Without dead ends: 255 [2021-05-06 06:38:35,086 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7230 ImplicationChecksByTransitivity, 13952.3ms TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2021-05-06 06:38:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-05-06 06:38:35,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-05-06 06:38:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.1244979919678715) internal successors, (280), 249 states have internal predecessors, (280), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2021-05-06 06:38:35,088 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 249 [2021-05-06 06:38:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:35,088 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2021-05-06 06:38:35,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 122 states have internal predecessors, (255), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2021-05-06 06:38:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-06 06:38:35,089 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:35,089 INFO L523 BasicCegarLoop]: trace histogram [120, 91, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:35,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:35,289 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:35,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1635552786, now seen corresponding path program 88 times [2021-05-06 06:38:35,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:35,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614101083] [2021-05-06 06:38:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:38,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14401 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-06 06:38:38,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:38,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614101083] [2021-05-06 06:38:38,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614101083] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:38,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027554911] [2021-05-06 06:38:38,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:38,585 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:38:38,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:38,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-06 06:38:38,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:38,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14401 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-06 06:38:38,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027554911] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:38,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:38,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-06 06:38:38,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854443895] [2021-05-06 06:38:38,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-06 06:38:38,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:38,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-06 06:38:38,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-06 06:38:38,974 INFO L87 Difference]: Start difference. First operand 254 states and 284 transitions. Second operand has 96 states, 96 states have (on average 2.0729166666666665) internal successors, (199), 95 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:44,603 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2021-05-06 06:38:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-06 06:38:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0729166666666665) internal successors, (199), 95 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 253 [2021-05-06 06:38:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:44,604 INFO L225 Difference]: With dead ends: 256 [2021-05-06 06:38:44,605 INFO L226 Difference]: Without dead ends: 256 [2021-05-06 06:38:44,606 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 8465.2ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-06 06:38:44,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-05-06 06:38:44,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-05-06 06:38:44,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 251 states have (on average 1.1235059760956174) internal successors, (282), 251 states have internal predecessors, (282), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 286 transitions. [2021-05-06 06:38:44,608 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 286 transitions. Word has length 253 [2021-05-06 06:38:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:44,608 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 286 transitions. [2021-05-06 06:38:44,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0729166666666665) internal successors, (199), 95 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 286 transitions. [2021-05-06 06:38:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-05-06 06:38:44,609 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:44,609 INFO L523 BasicCegarLoop]: trace histogram [121, 92, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:44,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:44,809 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:44,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:44,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1629376330, now seen corresponding path program 89 times [2021-05-06 06:38:44,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:44,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042840815] [2021-05-06 06:38:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:48,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 14642 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-06 06:38:48,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:48,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042840815] [2021-05-06 06:38:48,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042840815] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:48,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797316182] [2021-05-06 06:38:48,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:48,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2021-05-06 06:38:48,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:48,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-06 06:38:48,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:48,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14642 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-06 06:38:48,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797316182] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:48,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:38:48,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-06 06:38:48,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115428740] [2021-05-06 06:38:48,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-06 06:38:48,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:38:48,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-06 06:38:48,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-06 06:38:48,607 INFO L87 Difference]: Start difference. First operand 256 states and 286 transitions. Second operand has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:38:54,347 INFO L93 Difference]: Finished difference Result 258 states and 288 transitions. [2021-05-06 06:38:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-06 06:38:54,348 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 255 [2021-05-06 06:38:54,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:38:54,348 INFO L225 Difference]: With dead ends: 258 [2021-05-06 06:38:54,348 INFO L226 Difference]: Without dead ends: 258 [2021-05-06 06:38:54,349 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 8634.0ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-06 06:38:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-05-06 06:38:54,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-05-06 06:38:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 253 states have (on average 1.1225296442687747) internal successors, (284), 253 states have internal predecessors, (284), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 288 transitions. [2021-05-06 06:38:54,352 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 288 transitions. Word has length 255 [2021-05-06 06:38:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:38:54,352 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 288 transitions. [2021-05-06 06:38:54,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:38:54,352 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 288 transitions. [2021-05-06 06:38:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-06 06:38:54,353 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:38:54,353 INFO L523 BasicCegarLoop]: trace histogram [122, 93, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:38:54,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:54,554 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:38:54,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:38:54,554 INFO L82 PathProgramCache]: Analyzing trace with hash -394836570, now seen corresponding path program 90 times [2021-05-06 06:38:54,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:38:54,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601013333] [2021-05-06 06:38:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:38:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:38:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:38:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 5358 proven. 8742 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-06 06:38:57,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:38:57,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601013333] [2021-05-06 06:38:57,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601013333] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:38:57,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834673958] [2021-05-06 06:38:57,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:38:58,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-06 06:38:58,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:38:58,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-06 06:38:58,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:38:58,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:58,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:38:59,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 5487 proven. 841 refuted. 0 times theorem prover too weak. 8557 trivial. 0 not checked. [2021-05-06 06:39:00,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834673958] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:00,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:00,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 32] total 127 [2021-05-06 06:39:00,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734966299] [2021-05-06 06:39:00,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 127 states [2021-05-06 06:39:00,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:00,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-05-06 06:39:00,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2021-05-06 06:39:00,824 INFO L87 Difference]: Start difference. First operand 258 states and 288 transitions. Second operand has 127 states, 127 states have (on average 2.0708661417322833) internal successors, (263), 126 states have internal predecessors, (263), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:10,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:10,612 INFO L93 Difference]: Finished difference Result 263 states and 295 transitions. [2021-05-06 06:39:10,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-06 06:39:10,612 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.0708661417322833) internal successors, (263), 126 states have internal predecessors, (263), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 257 [2021-05-06 06:39:10,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:10,613 INFO L225 Difference]: With dead ends: 263 [2021-05-06 06:39:10,613 INFO L226 Difference]: Without dead ends: 263 [2021-05-06 06:39:10,615 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7719 ImplicationChecksByTransitivity, 14757.9ms TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2021-05-06 06:39:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-06 06:39:10,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-05-06 06:39:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.1245136186770428) internal successors, (289), 257 states have internal predecessors, (289), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2021-05-06 06:39:10,618 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 257 [2021-05-06 06:39:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:10,618 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2021-05-06 06:39:10,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 127 states, 127 states have (on average 2.0708661417322833) internal successors, (263), 126 states have internal predecessors, (263), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2021-05-06 06:39:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-06 06:39:10,619 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:10,619 INFO L523 BasicCegarLoop]: trace histogram [124, 94, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:10,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-06 06:39:10,841 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:10,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:10,841 INFO L82 PathProgramCache]: Analyzing trace with hash 312083837, now seen corresponding path program 91 times [2021-05-06 06:39:10,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:10,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341322698] [2021-05-06 06:39:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:14,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15377 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-06 06:39:14,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:14,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341322698] [2021-05-06 06:39:14,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341322698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:14,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873599267] [2021-05-06 06:39:14,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:14,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-06 06:39:14,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:14,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15377 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-06 06:39:14,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873599267] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:14,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:14,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-06 06:39:14,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600448212] [2021-05-06 06:39:14,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-06 06:39:14,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:14,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-06 06:39:14,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 06:39:14,702 INFO L87 Difference]: Start difference. First operand 262 states and 293 transitions. Second operand has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:20,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:20,714 INFO L93 Difference]: Finished difference Result 264 states and 295 transitions. [2021-05-06 06:39:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-06 06:39:20,714 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 261 [2021-05-06 06:39:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:20,715 INFO L225 Difference]: With dead ends: 264 [2021-05-06 06:39:20,715 INFO L226 Difference]: Without dead ends: 264 [2021-05-06 06:39:20,716 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 8905.5ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-06 06:39:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-05-06 06:39:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-05-06 06:39:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 259 states have (on average 1.1235521235521235) internal successors, (291), 259 states have internal predecessors, (291), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2021-05-06 06:39:20,718 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 261 [2021-05-06 06:39:20,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:20,718 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2021-05-06 06:39:20,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:20,718 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2021-05-06 06:39:20,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-06 06:39:20,719 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:20,719 INFO L523 BasicCegarLoop]: trace histogram [125, 95, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:20,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:20,920 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:20,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:20,920 INFO L82 PathProgramCache]: Analyzing trace with hash -140523815, now seen corresponding path program 92 times [2021-05-06 06:39:20,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:20,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368206614] [2021-05-06 06:39:20,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:24,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15626 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-06 06:39:24,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:24,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368206614] [2021-05-06 06:39:24,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368206614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:24,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701672631] [2021-05-06 06:39:24,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:24,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:39:24,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:24,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-06 06:39:24,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:24,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15626 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-06 06:39:24,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701672631] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:24,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:24,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-06 06:39:24,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601767922] [2021-05-06 06:39:24,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-06 06:39:24,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:24,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-06 06:39:24,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 06:39:24,878 INFO L87 Difference]: Start difference. First operand 264 states and 295 transitions. Second operand has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:30,915 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2021-05-06 06:39:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-06 06:39:30,916 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 263 [2021-05-06 06:39:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:30,917 INFO L225 Difference]: With dead ends: 266 [2021-05-06 06:39:30,917 INFO L226 Difference]: Without dead ends: 266 [2021-05-06 06:39:30,918 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 9108.2ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-06 06:39:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-05-06 06:39:30,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-05-06 06:39:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 261 states have (on average 1.1226053639846743) internal successors, (293), 261 states have internal predecessors, (293), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 297 transitions. [2021-05-06 06:39:30,920 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 297 transitions. Word has length 263 [2021-05-06 06:39:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:30,920 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 297 transitions. [2021-05-06 06:39:30,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:30,920 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 297 transitions. [2021-05-06 06:39:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-06 06:39:30,921 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:30,921 INFO L523 BasicCegarLoop]: trace histogram [126, 96, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:31,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-06 06:39:31,121 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:31,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1304780491, now seen corresponding path program 93 times [2021-05-06 06:39:31,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:31,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464587076] [2021-05-06 06:39:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 5723 proven. 9312 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-06 06:39:34,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:34,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464587076] [2021-05-06 06:39:34,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464587076] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:34,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082919200] [2021-05-06 06:39:34,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:34,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-06 06:39:34,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:34,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 06:39:34,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:34,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:34,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:35,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:36,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 5856 proven. 900 refuted. 0 times theorem prover too weak. 9121 trivial. 0 not checked. [2021-05-06 06:39:37,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082919200] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:37,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:37,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 33] total 131 [2021-05-06 06:39:37,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115327389] [2021-05-06 06:39:37,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states [2021-05-06 06:39:37,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:37,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-05-06 06:39:37,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2021-05-06 06:39:37,654 INFO L87 Difference]: Start difference. First operand 266 states and 297 transitions. Second operand has 131 states, 131 states have (on average 2.068702290076336) internal successors, (271), 130 states have internal predecessors, (271), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:48,060 INFO L93 Difference]: Finished difference Result 271 states and 304 transitions. [2021-05-06 06:39:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-05-06 06:39:48,060 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.068702290076336) internal successors, (271), 130 states have internal predecessors, (271), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 265 [2021-05-06 06:39:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:48,061 INFO L225 Difference]: With dead ends: 271 [2021-05-06 06:39:48,061 INFO L226 Difference]: Without dead ends: 271 [2021-05-06 06:39:48,063 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8224 ImplicationChecksByTransitivity, 15628.7ms TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2021-05-06 06:39:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-05-06 06:39:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2021-05-06 06:39:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.1245283018867924) internal successors, (298), 265 states have internal predecessors, (298), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 302 transitions. [2021-05-06 06:39:48,066 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 302 transitions. Word has length 265 [2021-05-06 06:39:48,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:48,066 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 302 transitions. [2021-05-06 06:39:48,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 131 states, 131 states have (on average 2.068702290076336) internal successors, (271), 130 states have internal predecessors, (271), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:48,066 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 302 transitions. [2021-05-06 06:39:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-06 06:39:48,067 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:48,067 INFO L523 BasicCegarLoop]: trace histogram [128, 97, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:48,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:48,268 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:48,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:48,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1331389108, now seen corresponding path program 94 times [2021-05-06 06:39:48,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:48,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900644742] [2021-05-06 06:39:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:51,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:39:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:39:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16385 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-06 06:39:51,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:39:51,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900644742] [2021-05-06 06:39:51,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900644742] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:51,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329780537] [2021-05-06 06:39:51,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:52,002 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:39:52,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:39:52,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-06 06:39:52,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:39:52,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:39:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16385 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-06 06:39:52,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329780537] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:39:52,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:39:52,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-06 06:39:52,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241439711] [2021-05-06 06:39:52,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-06 06:39:52,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:39:52,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-06 06:39:52,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-06 06:39:52,416 INFO L87 Difference]: Start difference. First operand 270 states and 302 transitions. Second operand has 102 states, 102 states have (on average 2.0686274509803924) internal successors, (211), 101 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:39:58,738 INFO L93 Difference]: Finished difference Result 272 states and 304 transitions. [2021-05-06 06:39:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-06 06:39:58,739 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0686274509803924) internal successors, (211), 101 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 269 [2021-05-06 06:39:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:39:58,740 INFO L225 Difference]: With dead ends: 272 [2021-05-06 06:39:58,740 INFO L226 Difference]: Without dead ends: 272 [2021-05-06 06:39:58,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 9462.3ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-06 06:39:58,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-06 06:39:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-06 06:39:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 267 states have (on average 1.1235955056179776) internal successors, (300), 267 states have internal predecessors, (300), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 304 transitions. [2021-05-06 06:39:58,743 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 304 transitions. Word has length 269 [2021-05-06 06:39:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:39:58,743 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 304 transitions. [2021-05-06 06:39:58,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.0686274509803924) internal successors, (211), 101 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:39:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 304 transitions. [2021-05-06 06:39:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-05-06 06:39:58,744 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:39:58,744 INFO L523 BasicCegarLoop]: trace histogram [129, 98, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:39:58,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:39:58,949 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:39:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:39:58,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1594801496, now seen corresponding path program 95 times [2021-05-06 06:39:58,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:39:58,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070637230] [2021-05-06 06:39:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:39:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 16642 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-06 06:40:02,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:02,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070637230] [2021-05-06 06:40:02,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070637230] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:02,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938137768] [2021-05-06 06:40:02,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:02,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2021-05-06 06:40:02,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:02,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-06 06:40:02,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:02,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:02,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 16642 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-06 06:40:03,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938137768] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:03,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:03,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-06 06:40:03,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687476532] [2021-05-06 06:40:03,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-06 06:40:03,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-06 06:40:03,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-06 06:40:03,231 INFO L87 Difference]: Start difference. First operand 272 states and 304 transitions. Second operand has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:09,698 INFO L93 Difference]: Finished difference Result 274 states and 306 transitions. [2021-05-06 06:40:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-06 06:40:09,698 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 271 [2021-05-06 06:40:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:09,699 INFO L225 Difference]: With dead ends: 274 [2021-05-06 06:40:09,699 INFO L226 Difference]: Without dead ends: 274 [2021-05-06 06:40:09,701 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 9619.8ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-06 06:40:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-05-06 06:40:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-05-06 06:40:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 269 states have (on average 1.1226765799256506) internal successors, (302), 269 states have internal predecessors, (302), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 306 transitions. [2021-05-06 06:40:09,704 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 306 transitions. Word has length 271 [2021-05-06 06:40:09,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:09,704 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 306 transitions. [2021-05-06 06:40:09,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 306 transitions. [2021-05-06 06:40:09,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-05-06 06:40:09,705 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:09,705 INFO L523 BasicCegarLoop]: trace histogram [130, 99, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:09,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-06 06:40:09,909 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:09,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1331035900, now seen corresponding path program 96 times [2021-05-06 06:40:09,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:09,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811256901] [2021-05-06 06:40:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:13,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 16901 backedges. 6100 proven. 9900 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-06 06:40:13,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:13,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811256901] [2021-05-06 06:40:13,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811256901] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:13,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510446731] [2021-05-06 06:40:13,657 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:13,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-06 06:40:13,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:13,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-06 06:40:13,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:14,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:14,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:15,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:16,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16901 backedges. 6237 proven. 961 refuted. 0 times theorem prover too weak. 9703 trivial. 0 not checked. [2021-05-06 06:40:16,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510446731] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:16,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:16,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 34] total 135 [2021-05-06 06:40:16,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38470844] [2021-05-06 06:40:16,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states [2021-05-06 06:40:16,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:16,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-05-06 06:40:16,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2021-05-06 06:40:16,926 INFO L87 Difference]: Start difference. First operand 274 states and 306 transitions. Second operand has 135 states, 135 states have (on average 2.066666666666667) internal successors, (279), 134 states have internal predecessors, (279), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:27,805 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2021-05-06 06:40:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-05-06 06:40:27,806 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.066666666666667) internal successors, (279), 134 states have internal predecessors, (279), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 273 [2021-05-06 06:40:27,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:27,807 INFO L225 Difference]: With dead ends: 279 [2021-05-06 06:40:27,807 INFO L226 Difference]: Without dead ends: 279 [2021-05-06 06:40:27,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8745 ImplicationChecksByTransitivity, 16486.8ms TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2021-05-06 06:40:27,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-05-06 06:40:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2021-05-06 06:40:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 273 states have (on average 1.1245421245421245) internal successors, (307), 273 states have internal predecessors, (307), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 311 transitions. [2021-05-06 06:40:27,812 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 311 transitions. Word has length 273 [2021-05-06 06:40:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:27,812 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 311 transitions. [2021-05-06 06:40:27,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 135 states, 135 states have (on average 2.066666666666667) internal successors, (279), 134 states have internal predecessors, (279), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 311 transitions. [2021-05-06 06:40:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-06 06:40:27,813 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:27,814 INFO L523 BasicCegarLoop]: trace histogram [132, 100, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:28,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-06 06:40:28,017 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:28,017 INFO L82 PathProgramCache]: Analyzing trace with hash -599316133, now seen corresponding path program 97 times [2021-05-06 06:40:28,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:28,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035345657] [2021-05-06 06:40:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:31,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 17425 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-06 06:40:31,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:31,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035345657] [2021-05-06 06:40:31,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035345657] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:31,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679551750] [2021-05-06 06:40:31,839 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:31,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-06 06:40:31,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:31,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:31,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 17425 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-06 06:40:32,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679551750] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:32,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:32,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-06 06:40:32,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859075569] [2021-05-06 06:40:32,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-06 06:40:32,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:32,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-06 06:40:32,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-06 06:40:32,346 INFO L87 Difference]: Start difference. First operand 278 states and 311 transitions. Second operand has 105 states, 105 states have (on average 2.066666666666667) internal successors, (217), 104 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:39,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:39,034 INFO L93 Difference]: Finished difference Result 280 states and 313 transitions. [2021-05-06 06:40:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-06 06:40:39,035 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.066666666666667) internal successors, (217), 104 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 277 [2021-05-06 06:40:39,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:39,036 INFO L225 Difference]: With dead ends: 280 [2021-05-06 06:40:39,036 INFO L226 Difference]: Without dead ends: 280 [2021-05-06 06:40:39,038 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 10016.8ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-06 06:40:39,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-06 06:40:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-05-06 06:40:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 275 states have (on average 1.1236363636363635) internal successors, (309), 275 states have internal predecessors, (309), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 313 transitions. [2021-05-06 06:40:39,040 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 313 transitions. Word has length 277 [2021-05-06 06:40:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:39,040 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 313 transitions. [2021-05-06 06:40:39,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.066666666666667) internal successors, (217), 104 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 313 transitions. [2021-05-06 06:40:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-05-06 06:40:39,041 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:39,041 INFO L523 BasicCegarLoop]: trace histogram [133, 101, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:39,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:39,242 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:39,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash 615953079, now seen corresponding path program 98 times [2021-05-06 06:40:39,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:39,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964948036] [2021-05-06 06:40:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-06 06:40:43,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:43,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964948036] [2021-05-06 06:40:43,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964948036] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:43,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643948629] [2021-05-06 06:40:43,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:43,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:40:43,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:43,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-06 06:40:43,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:43,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-06 06:40:43,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643948629] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:43,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:43,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-06 06:40:43,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855682395] [2021-05-06 06:40:43,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-06 06:40:43,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:43,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-06 06:40:43,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 06:40:43,637 INFO L87 Difference]: Start difference. First operand 280 states and 313 transitions. Second operand has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:50,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:40:50,483 INFO L93 Difference]: Finished difference Result 282 states and 315 transitions. [2021-05-06 06:40:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-06 06:40:50,483 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 279 [2021-05-06 06:40:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:40:50,484 INFO L225 Difference]: With dead ends: 282 [2021-05-06 06:40:50,484 INFO L226 Difference]: Without dead ends: 282 [2021-05-06 06:40:50,485 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 10207.5ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-06 06:40:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-05-06 06:40:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-05-06 06:40:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 277 states have (on average 1.1227436823104693) internal successors, (311), 277 states have internal predecessors, (311), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 315 transitions. [2021-05-06 06:40:50,488 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 315 transitions. Word has length 279 [2021-05-06 06:40:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:40:50,488 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 315 transitions. [2021-05-06 06:40:50,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:40:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 315 transitions. [2021-05-06 06:40:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-06 06:40:50,489 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:40:50,489 INFO L523 BasicCegarLoop]: trace histogram [134, 102, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:40:50,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-06 06:40:50,690 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:40:50,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:40:50,690 INFO L82 PathProgramCache]: Analyzing trace with hash 258561299, now seen corresponding path program 99 times [2021-05-06 06:40:50,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:40:50,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253168668] [2021-05-06 06:40:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:40:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:40:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:40:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 17957 backedges. 6489 proven. 10506 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-06 06:40:54,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:40:54,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253168668] [2021-05-06 06:40:54,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253168668] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:54,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363931621] [2021-05-06 06:40:54,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:40:54,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-06 06:40:54,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:40:54,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-06 06:40:54,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:40:55,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:55,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:56,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:57,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:40:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 17957 backedges. 6630 proven. 1024 refuted. 0 times theorem prover too weak. 10303 trivial. 0 not checked. [2021-05-06 06:40:58,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363931621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:40:58,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:40:58,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 35] total 139 [2021-05-06 06:40:58,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611660973] [2021-05-06 06:40:58,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 139 states [2021-05-06 06:40:58,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:40:58,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-05-06 06:40:58,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2021-05-06 06:40:58,034 INFO L87 Difference]: Start difference. First operand 282 states and 315 transitions. Second operand has 139 states, 139 states have (on average 2.064748201438849) internal successors, (287), 138 states have internal predecessors, (287), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:09,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:09,620 INFO L93 Difference]: Finished difference Result 287 states and 322 transitions. [2021-05-06 06:41:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-05-06 06:41:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.064748201438849) internal successors, (287), 138 states have internal predecessors, (287), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 281 [2021-05-06 06:41:09,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:09,621 INFO L225 Difference]: With dead ends: 287 [2021-05-06 06:41:09,621 INFO L226 Difference]: Without dead ends: 287 [2021-05-06 06:41:09,623 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9282 ImplicationChecksByTransitivity, 17464.5ms TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2021-05-06 06:41:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-05-06 06:41:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2021-05-06 06:41:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 281 states have (on average 1.1245551601423487) internal successors, (316), 281 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 320 transitions. [2021-05-06 06:41:09,626 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 320 transitions. Word has length 281 [2021-05-06 06:41:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:09,626 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 320 transitions. [2021-05-06 06:41:09,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 139 states, 139 states have (on average 2.064748201438849) internal successors, (287), 138 states have internal predecessors, (287), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:09,626 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 320 transitions. [2021-05-06 06:41:09,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-06 06:41:09,627 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:09,627 INFO L523 BasicCegarLoop]: trace histogram [136, 103, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:09,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-06 06:41:09,849 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:09,849 INFO L82 PathProgramCache]: Analyzing trace with hash -873883222, now seen corresponding path program 100 times [2021-05-06 06:41:09,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:09,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460290096] [2021-05-06 06:41:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:13,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18497 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-06 06:41:13,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:13,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460290096] [2021-05-06 06:41:13,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460290096] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:13,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528996740] [2021-05-06 06:41:13,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:14,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:41:14,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:14,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-06 06:41:14,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:14,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 18497 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-06 06:41:14,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528996740] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:14,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:14,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-06 06:41:14,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123478302] [2021-05-06 06:41:14,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-06 06:41:14,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:14,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-06 06:41:14,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-06 06:41:14,483 INFO L87 Difference]: Start difference. First operand 286 states and 320 transitions. Second operand has 108 states, 108 states have (on average 2.064814814814815) internal successors, (223), 107 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:21,571 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2021-05-06 06:41:21,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-06 06:41:21,572 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.064814814814815) internal successors, (223), 107 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2021-05-06 06:41:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:21,572 INFO L225 Difference]: With dead ends: 288 [2021-05-06 06:41:21,572 INFO L226 Difference]: Without dead ends: 288 [2021-05-06 06:41:21,574 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 10583.6ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-06 06:41:21,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-05-06 06:41:21,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-05-06 06:41:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 283 states have (on average 1.1236749116607774) internal successors, (318), 283 states have internal predecessors, (318), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 322 transitions. [2021-05-06 06:41:21,576 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 322 transitions. Word has length 285 [2021-05-06 06:41:21,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:21,576 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 322 transitions. [2021-05-06 06:41:21,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.064814814814815) internal successors, (223), 107 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 322 transitions. [2021-05-06 06:41:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-06 06:41:21,577 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:21,577 INFO L523 BasicCegarLoop]: trace histogram [137, 104, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:21,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-06 06:41:21,778 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:21,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:21,778 INFO L82 PathProgramCache]: Analyzing trace with hash 492308230, now seen corresponding path program 101 times [2021-05-06 06:41:21,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:21,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143112712] [2021-05-06 06:41:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:25,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18770 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-06 06:41:25,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:25,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143112712] [2021-05-06 06:41:25,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143112712] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:25,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712681166] [2021-05-06 06:41:25,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:26,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2021-05-06 06:41:26,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:26,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-06 06:41:26,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:26,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18770 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-06 06:41:26,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712681166] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:26,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:26,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-06 06:41:26,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390345864] [2021-05-06 06:41:26,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-06 06:41:26,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:26,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-06 06:41:26,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-06 06:41:26,588 INFO L87 Difference]: Start difference. First operand 288 states and 322 transitions. Second operand has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:33,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:33,802 INFO L93 Difference]: Finished difference Result 290 states and 324 transitions. [2021-05-06 06:41:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-06 06:41:33,802 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 287 [2021-05-06 06:41:33,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:33,803 INFO L225 Difference]: With dead ends: 290 [2021-05-06 06:41:33,803 INFO L226 Difference]: Without dead ends: 290 [2021-05-06 06:41:33,805 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 10802.5ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-06 06:41:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-06 06:41:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-06 06:41:33,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 285 states have (on average 1.1228070175438596) internal successors, (320), 285 states have internal predecessors, (320), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 324 transitions. [2021-05-06 06:41:33,807 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 324 transitions. Word has length 287 [2021-05-06 06:41:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:33,808 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 324 transitions. [2021-05-06 06:41:33,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 324 transitions. [2021-05-06 06:41:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-05-06 06:41:33,809 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:33,809 INFO L523 BasicCegarLoop]: trace histogram [138, 105, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:34,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:34,021 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:34,021 INFO L82 PathProgramCache]: Analyzing trace with hash -857698974, now seen corresponding path program 102 times [2021-05-06 06:41:34,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:34,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933366018] [2021-05-06 06:41:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:38,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 19045 backedges. 6890 proven. 11130 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-06 06:41:38,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:38,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933366018] [2021-05-06 06:41:38,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933366018] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:38,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128201858] [2021-05-06 06:41:38,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:38,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2021-05-06 06:41:38,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:41:38,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-06 06:41:38,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:38,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:38,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:38,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:38,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:38,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:39,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:40,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 19045 backedges. 7035 proven. 1089 refuted. 0 times theorem prover too weak. 10921 trivial. 0 not checked. [2021-05-06 06:41:41,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128201858] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:41,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:41,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 36] total 143 [2021-05-06 06:41:41,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883774539] [2021-05-06 06:41:41,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 143 states [2021-05-06 06:41:41,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:41,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-05-06 06:41:41,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2021-05-06 06:41:41,951 INFO L87 Difference]: Start difference. First operand 290 states and 324 transitions. Second operand has 143 states, 143 states have (on average 2.062937062937063) internal successors, (295), 142 states have internal predecessors, (295), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:41:54,316 INFO L93 Difference]: Finished difference Result 295 states and 331 transitions. [2021-05-06 06:41:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-05-06 06:41:54,316 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.062937062937063) internal successors, (295), 142 states have internal predecessors, (295), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 289 [2021-05-06 06:41:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:41:54,317 INFO L225 Difference]: With dead ends: 295 [2021-05-06 06:41:54,317 INFO L226 Difference]: Without dead ends: 295 [2021-05-06 06:41:54,319 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9835 ImplicationChecksByTransitivity, 18691.7ms TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2021-05-06 06:41:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-05-06 06:41:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-05-06 06:41:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 289 states have (on average 1.1245674740484428) internal successors, (325), 289 states have internal predecessors, (325), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 329 transitions. [2021-05-06 06:41:54,321 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 329 transitions. Word has length 289 [2021-05-06 06:41:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:41:54,322 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 329 transitions. [2021-05-06 06:41:54,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 143 states, 143 states have (on average 2.062937062937063) internal successors, (295), 142 states have internal predecessors, (295), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:41:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 329 transitions. [2021-05-06 06:41:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-06 06:41:54,323 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:41:54,323 INFO L523 BasicCegarLoop]: trace histogram [140, 106, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:41:54,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-06 06:41:54,523 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:41:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:41:54,524 INFO L82 PathProgramCache]: Analyzing trace with hash -407380423, now seen corresponding path program 103 times [2021-05-06 06:41:54,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:41:54,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056783609] [2021-05-06 06:41:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:41:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:41:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-06 06:41:58,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:41:58,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056783609] [2021-05-06 06:41:58,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056783609] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:58,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050962692] [2021-05-06 06:41:58,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:41:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:41:58,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-06 06:41:58,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:41:58,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:58,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:41:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-06 06:41:59,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050962692] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:41:59,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:41:59,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 111 [2021-05-06 06:41:59,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928239435] [2021-05-06 06:41:59,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-06 06:41:59,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:41:59,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-06 06:41:59,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-06 06:41:59,375 INFO L87 Difference]: Start difference. First operand 294 states and 329 transitions. Second operand has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:06,721 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2021-05-06 06:42:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-06 06:42:06,721 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 293 [2021-05-06 06:42:06,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:06,722 INFO L225 Difference]: With dead ends: 296 [2021-05-06 06:42:06,722 INFO L226 Difference]: Without dead ends: 296 [2021-05-06 06:42:06,723 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6092 ImplicationChecksByTransitivity, 11210.1ms TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2021-05-06 06:42:06,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-05-06 06:42:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-05-06 06:42:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 291 states have (on average 1.1237113402061856) internal successors, (327), 291 states have internal predecessors, (327), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:06,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 331 transitions. [2021-05-06 06:42:06,725 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 331 transitions. Word has length 293 [2021-05-06 06:42:06,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:06,726 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 331 transitions. [2021-05-06 06:42:06,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 331 transitions. [2021-05-06 06:42:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-05-06 06:42:06,726 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:06,727 INFO L523 BasicCegarLoop]: trace histogram [141, 107, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:06,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-06 06:42:06,927 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:06,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1459695509, now seen corresponding path program 104 times [2021-05-06 06:42:06,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:06,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809397303] [2021-05-06 06:42:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:11,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 19882 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-06 06:42:11,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:11,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809397303] [2021-05-06 06:42:11,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809397303] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:11,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274885270] [2021-05-06 06:42:11,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:11,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:42:11,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:11,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-06 06:42:11,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:11,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 19882 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-06 06:42:11,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274885270] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:11,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:11,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 112 [2021-05-06 06:42:11,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639759462] [2021-05-06 06:42:11,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-06 06:42:11,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:11,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-06 06:42:11,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 06:42:11,873 INFO L87 Difference]: Start difference. First operand 296 states and 331 transitions. Second operand has 112 states, 112 states have (on average 2.0625) internal successors, (231), 111 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:19,318 INFO L93 Difference]: Finished difference Result 298 states and 333 transitions. [2021-05-06 06:42:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-06 06:42:19,318 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0625) internal successors, (231), 111 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 295 [2021-05-06 06:42:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:19,319 INFO L225 Difference]: With dead ends: 298 [2021-05-06 06:42:19,319 INFO L226 Difference]: Without dead ends: 298 [2021-05-06 06:42:19,320 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 11378.6ms TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2021-05-06 06:42:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-05-06 06:42:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-05-06 06:42:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 293 states have (on average 1.1228668941979523) internal successors, (329), 293 states have internal predecessors, (329), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 333 transitions. [2021-05-06 06:42:19,322 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 333 transitions. Word has length 295 [2021-05-06 06:42:19,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:19,322 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 333 transitions. [2021-05-06 06:42:19,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.0625) internal successors, (231), 111 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 333 transitions. [2021-05-06 06:42:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-05-06 06:42:19,323 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:19,323 INFO L523 BasicCegarLoop]: trace histogram [142, 108, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:19,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:19,525 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:19,525 INFO L82 PathProgramCache]: Analyzing trace with hash 423336433, now seen corresponding path program 105 times [2021-05-06 06:42:19,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:19,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434708245] [2021-05-06 06:42:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:23,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 20165 backedges. 7303 proven. 11772 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-06 06:42:23,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:23,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434708245] [2021-05-06 06:42:23,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434708245] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:23,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346477668] [2021-05-06 06:42:23,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:24,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-06 06:42:24,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:24,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 06:42:24,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:24,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:24,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:25,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:26,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 20165 backedges. 7452 proven. 1156 refuted. 0 times theorem prover too weak. 11557 trivial. 0 not checked. [2021-05-06 06:42:27,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346477668] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:27,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:27,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 37] total 147 [2021-05-06 06:42:27,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813697905] [2021-05-06 06:42:27,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 147 states [2021-05-06 06:42:27,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:27,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2021-05-06 06:42:27,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2021-05-06 06:42:27,744 INFO L87 Difference]: Start difference. First operand 298 states and 333 transitions. Second operand has 147 states, 147 states have (on average 2.061224489795918) internal successors, (303), 146 states have internal predecessors, (303), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:40,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:40,651 INFO L93 Difference]: Finished difference Result 303 states and 340 transitions. [2021-05-06 06:42:40,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2021-05-06 06:42:40,651 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 2.061224489795918) internal successors, (303), 146 states have internal predecessors, (303), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 297 [2021-05-06 06:42:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:40,652 INFO L225 Difference]: With dead ends: 303 [2021-05-06 06:42:40,652 INFO L226 Difference]: Without dead ends: 303 [2021-05-06 06:42:40,654 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 19487.8ms TimeCoverageRelationStatistics Valid=31755, Invalid=52635, Unknown=0, NotChecked=0, Total=84390 [2021-05-06 06:42:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-05-06 06:42:40,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 302. [2021-05-06 06:42:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 297 states have (on average 1.1245791245791246) internal successors, (334), 297 states have internal predecessors, (334), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 338 transitions. [2021-05-06 06:42:40,656 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 338 transitions. Word has length 297 [2021-05-06 06:42:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:40,656 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 338 transitions. [2021-05-06 06:42:40,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 147 states, 147 states have (on average 2.061224489795918) internal successors, (303), 146 states have internal predecessors, (303), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 338 transitions. [2021-05-06 06:42:40,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-05-06 06:42:40,657 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:40,657 INFO L523 BasicCegarLoop]: trace histogram [144, 109, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:40,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:40,858 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:40,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:40,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1755440904, now seen corresponding path program 106 times [2021-05-06 06:42:40,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:40,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046599474] [2021-05-06 06:42:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:45,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 20737 backedges. 7590 proven. 11990 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-06 06:42:45,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:45,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046599474] [2021-05-06 06:42:45,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046599474] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:45,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133689755] [2021-05-06 06:42:45,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:45,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 06:42:45,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:45,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-06 06:42:45,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:45,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 20737 backedges. 7590 proven. 11990 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-06 06:42:45,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133689755] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:45,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:45,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 114 [2021-05-06 06:42:45,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325391471] [2021-05-06 06:42:45,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-06 06:42:45,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:45,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-06 06:42:45,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2021-05-06 06:42:45,971 INFO L87 Difference]: Start difference. First operand 302 states and 338 transitions. Second operand has 114 states, 114 states have (on average 2.06140350877193) internal successors, (235), 113 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:42:53,786 INFO L93 Difference]: Finished difference Result 304 states and 340 transitions. [2021-05-06 06:42:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-06 06:42:53,786 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.06140350877193) internal successors, (235), 113 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 301 [2021-05-06 06:42:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:42:53,787 INFO L225 Difference]: With dead ends: 304 [2021-05-06 06:42:53,787 INFO L226 Difference]: Without dead ends: 304 [2021-05-06 06:42:53,789 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6428 ImplicationChecksByTransitivity, 11756.3ms TimeCoverageRelationStatistics Valid=18761, Invalid=31191, Unknown=0, NotChecked=0, Total=49952 [2021-05-06 06:42:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-05-06 06:42:53,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-05-06 06:42:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 299 states have (on average 1.1237458193979932) internal successors, (336), 299 states have internal predecessors, (336), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 340 transitions. [2021-05-06 06:42:53,791 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 340 transitions. Word has length 301 [2021-05-06 06:42:53,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:42:53,791 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 340 transitions. [2021-05-06 06:42:53,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 114 states, 114 states have (on average 2.06140350877193) internal successors, (235), 113 states have internal predecessors, (235), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:42:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 340 transitions. [2021-05-06 06:42:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-05-06 06:42:53,792 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:42:53,792 INFO L523 BasicCegarLoop]: trace histogram [145, 110, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:42:53,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:53,993 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:42:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:42:53,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1856117860, now seen corresponding path program 107 times [2021-05-06 06:42:53,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:42:53,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172837886] [2021-05-06 06:42:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:42:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:42:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:42:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 21026 backedges. 7659 proven. 12210 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-06 06:42:58,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:42:58,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172837886] [2021-05-06 06:42:58,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172837886] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:58,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714706251] [2021-05-06 06:42:58,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:42:58,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 146 check-sat command(s) [2021-05-06 06:42:58,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:42:58,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 112 conjunts are in the unsatisfiable core [2021-05-06 06:42:58,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:42:58,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:58,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:42:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 21026 backedges. 7659 proven. 12210 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-06 06:42:59,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714706251] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:42:59,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:42:59,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113] total 115 [2021-05-06 06:42:59,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897077671] [2021-05-06 06:42:59,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-06 06:42:59,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:42:59,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-06 06:42:59,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 06:42:59,215 INFO L87 Difference]: Start difference. First operand 304 states and 340 transitions. Second operand has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:43:06,895 INFO L93 Difference]: Finished difference Result 306 states and 342 transitions. [2021-05-06 06:43:06,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-05-06 06:43:06,896 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 303 [2021-05-06 06:43:06,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:43:06,896 INFO L225 Difference]: With dead ends: 306 [2021-05-06 06:43:06,896 INFO L226 Difference]: Without dead ends: 306 [2021-05-06 06:43:06,898 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6542 ImplicationChecksByTransitivity, 11811.2ms TimeCoverageRelationStatistics Valid=19098, Invalid=31752, Unknown=0, NotChecked=0, Total=50850 [2021-05-06 06:43:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-05-06 06:43:06,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-05-06 06:43:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 301 states have (on average 1.1229235880398671) internal successors, (338), 301 states have internal predecessors, (338), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 342 transitions. [2021-05-06 06:43:06,900 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 342 transitions. Word has length 303 [2021-05-06 06:43:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:43:06,900 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 342 transitions. [2021-05-06 06:43:06,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:43:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 342 transitions. [2021-05-06 06:43:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-05-06 06:43:06,901 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:43:06,901 INFO L523 BasicCegarLoop]: trace histogram [146, 111, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:43:07,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:43:07,102 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:43:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:43:07,102 INFO L82 PathProgramCache]: Analyzing trace with hash -177575232, now seen corresponding path program 108 times [2021-05-06 06:43:07,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:43:07,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602289049] [2021-05-06 06:43:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:43:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:11,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:43:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:43:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 21317 backedges. 7728 proven. 12432 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-06 06:43:11,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:43:11,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602289049] [2021-05-06 06:43:11,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602289049] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:11,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126925166] [2021-05-06 06:43:11,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:43:11,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 143 check-sat command(s) [2021-05-06 06:43:11,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:43:11,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-06 06:43:12,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:43:12,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:12,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:13,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:14,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:43:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 21317 backedges. 7881 proven. 1225 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2021-05-06 06:43:15,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126925166] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:43:15,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:43:15,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 38] total 151 [2021-05-06 06:43:15,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990394593] [2021-05-06 06:43:15,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 151 states [2021-05-06 06:43:15,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:43:15,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2021-05-06 06:43:15,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2021-05-06 06:43:15,727 INFO L87 Difference]: Start difference. First operand 306 states and 342 transitions. Second operand has 151 states, 151 states have (on average 2.0596026490066226) internal successors, (311), 150 states have internal predecessors, (311), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)