/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_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:39:19,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:39:19,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:39:19,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:39:19,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:39:19,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:39:19,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:39:19,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:39:19,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:39:19,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:39:19,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:39:19,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:39:19,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:39:19,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:39:19,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:39:19,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:39:19,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:39:19,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:39:19,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:39:19,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:39:19,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:39:19,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:39:19,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:39:19,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:39:19,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:39:19,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:39:19,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:39:19,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:39:19,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:39:19,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:39:19,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:39:19,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:39:19,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:39:19,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:39:19,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:39:19,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:39:19,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:39:19,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:39:19,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:39:19,706 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:39:19,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:39:19,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:39:19,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:39:19,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:39:19,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:39:19,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:39:19,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:39:19,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:39:19,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:39:19,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:39:19,708 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:39:19,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:39:19,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:39:20,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:39:20,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:39:20,010 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:39:20,011 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:39:20,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_1.c [2021-05-02 18:39:20,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5285099/d970304075c749e59e60985104492ba6/FLAG5925e7dc2 [2021-05-02 18:39:20,348 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:39:20,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_1.c [2021-05-02 18:39:20,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5285099/d970304075c749e59e60985104492ba6/FLAG5925e7dc2 [2021-05-02 18:39:20,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5285099/d970304075c749e59e60985104492ba6 [2021-05-02 18:39:20,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:39:20,797 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:39:20,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:39:20,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:39:20,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:39:20,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:39:20" (1/1) ... [2021-05-02 18:39:20,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9cce42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20, skipping insertion in model container [2021-05-02 18:39:20,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:39:20" (1/1) ... [2021-05-02 18:39:20,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:39:20,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:39:20,896 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_1.c[318,331] [2021-05-02 18:39:20,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:39:20,907 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:39:20,915 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_1.c[318,331] [2021-05-02 18:39:20,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:39:20,925 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:39:20,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20 WrapperNode [2021-05-02 18:39:20,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:39:20,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:39:20,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:39:20,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:39:20,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20" (1/1) ... [2021-05-02 18:39:20,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20" (1/1) ... [2021-05-02 18:39:20,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20" (1/1) ... [2021-05-02 18:39:20,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20" (1/1) ... [2021-05-02 18:39:20,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20" (1/1) ... [2021-05-02 18:39:20,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20" (1/1) ... [2021-05-02 18:39:20,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20" (1/1) ... [2021-05-02 18:39:20,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:39:20,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:39:20,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:39:20,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:39:20,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20" (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 [2021-05-02 18:39:21,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:39:21,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:39:21,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:39:21,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:39:21,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:39:21,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:39:21,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:39:21,240 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 18:39:21,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:39:21 BoogieIcfgContainer [2021-05-02 18:39:21,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:39:21,241 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:39:21,241 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:39:21,242 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:39:21,243 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:39:21" (1/1) ... [2021-05-02 18:39:21,319 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~z~0_1 v_main_~y~0_2) InVars {main_~y~0=v_main_~y~0_2, main_~z~0=v_main_~z~0_1} OutVars{main_~y~0=v_main_~y~0_2, main_~z~0=v_main_~z~0_1} AuxVars[] AssignedVars[] [2021-05-02 18:39:21,350 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 83.8 percent of original size [2021-05-02 18:39:21,440 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 83.8 percent of original size 57 [2021-05-02 18:39:21,465 INFO L1112 elerationTransformer]: Accelerated Formula: (and (< v_main_~z~0_1 v_main_~y~0_2) (= v_main_~y~0_2 (+ v_main_~y~0_1 1)) (= v_main_~x~0_3 (+ v_main_~x~0_2 1))) InVars {main_~x~0=v_main_~x~0_3, main_~z~0=v_main_~z~0_1, 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_~y~0, main_#t~post11] with 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_#t~post10_3| |v_main_#t~post10_1|) (<= v_main_~y~0_2 v_main_~z~0_1)) (let ((.cse0 (+ v_itFin_1 v_main_~z~0_1))) (and (= v_main_~x~0_3 (+ v_itFin_1 v_main_~x~0_2)) (<= v_main_~y~0_2 .cse0) (< v_main_~z~0_1 v_main_~y~0_2) (= v_main_~y~0_2 (+ v_itFin_1 v_main_~y~0_1)) (< .cse0 (+ v_main_~y~0_2 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_1} 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_~y~0, main_#t~post11] [2021-05-02 18:39:21,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:39:21 BasicIcfg [2021-05-02 18:39:21,474 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:39:21,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:39:21,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:39:21,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:39:21,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:39:20" (1/4) ... [2021-05-02 18:39:21,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207d666d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:39:21, skipping insertion in model container [2021-05-02 18:39:21,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:39:20" (2/4) ... [2021-05-02 18:39:21,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207d666d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:39:21, skipping insertion in model container [2021-05-02 18:39:21,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:39:21" (3/4) ... [2021-05-02 18:39:21,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207d666d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:39:21, skipping insertion in model container [2021-05-02 18:39:21,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:39:21" (4/4) ... [2021-05-02 18:39:21,481 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_1.cJordan [2021-05-02 18:39:21,485 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:39:21,487 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:39:21,497 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:39:21,519 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:39:21,520 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:39:21,520 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:39:21,520 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:39:21,520 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:39:21,520 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:39:21,520 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:39:21,520 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:39:21,529 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) [2021-05-02 18:39:21,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:39:21,534 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:21,534 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:21,534 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash 164364990, now seen corresponding path program 1 times [2021-05-02 18:39:21,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:21,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270151980] [2021-05-02 18:39:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:39:21,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:21,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270151980] [2021-05-02 18:39:21,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270151980] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:39:21,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:39:21,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:39:21,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42326702] [2021-05-02 18:39:21,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:39:21,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:21,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:39:21,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:39:21,732 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) [2021-05-02 18:39:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:21,770 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-02 18:39:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:39:21,772 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 [2021-05-02 18:39:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:21,778 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:39:21,779 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 18:39:21,780 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:39:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 18:39:21,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 18:39:21,804 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) [2021-05-02 18:39:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-05-02 18:39:21,806 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-05-02 18:39:21,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:21,807 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-05-02 18:39:21,808 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) [2021-05-02 18:39:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-05-02 18:39:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:39:21,808 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:21,809 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:21,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:39:21,809 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:21,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:21,810 INFO L82 PathProgramCache]: Analyzing trace with hash 165288511, now seen corresponding path program 1 times [2021-05-02 18:39:21,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:21,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291305828] [2021-05-02 18:39:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:21,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:39:21,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:21,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291305828] [2021-05-02 18:39:21,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291305828] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:39:21,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:39:21,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:39:21,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131813849] [2021-05-02 18:39:21,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:39:21,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:21,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:39:21,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:39:21,953 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) [2021-05-02 18:39:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:22,009 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-05-02 18:39:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:39:22,010 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 [2021-05-02 18:39:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:22,011 INFO L225 Difference]: With dead ends: 16 [2021-05-02 18:39:22,011 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 18:39:22,012 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:39:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 18:39:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 18:39:22,019 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) [2021-05-02 18:39:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-02 18:39:22,020 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-05-02 18:39:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:22,021 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-02 18:39:22,021 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) [2021-05-02 18:39:22,021 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-02 18:39:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 18:39:22,022 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:22,022 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:22,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:39:22,024 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:22,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:22,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1054746269, now seen corresponding path program 1 times [2021-05-02 18:39:22,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:22,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318122569] [2021-05-02 18:39:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:22,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:39:22,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:22,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318122569] [2021-05-02 18:39:22,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318122569] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:39:22,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:39:22,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:39:22,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238346100] [2021-05-02 18:39:22,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:39:22,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:22,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:39:22,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:39:22,117 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) [2021-05-02 18:39:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:22,158 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-05-02 18:39:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:39:22,158 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 [2021-05-02 18:39:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:22,159 INFO L225 Difference]: With dead ends: 17 [2021-05-02 18:39:22,159 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:39:22,159 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:39:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:39:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 18:39:22,160 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) [2021-05-02 18:39:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 18:39:22,161 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-02 18:39:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:22,161 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 18:39:22,161 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) [2021-05-02 18:39:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 18:39:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:39:22,162 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:22,162 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:22,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 18:39:22,162 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:22,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:22,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1687477607, now seen corresponding path program 1 times [2021-05-02 18:39:22,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:22,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518835049] [2021-05-02 18:39:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:22,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:39:22,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:22,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518835049] [2021-05-02 18:39:22,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518835049] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:22,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70336771] [2021-05-02 18:39:22,205 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 [2021-05-02 18:39:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:22,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 18:39:22,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:22,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:22,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:39:22,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70336771] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:22,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:22,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 18:39:22,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704592942] [2021-05-02 18:39:22,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:39:22,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:22,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:39:22,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:39:22,298 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) [2021-05-02 18:39:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:22,386 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-02 18:39:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:39:22,386 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 [2021-05-02 18:39:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:22,387 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:39:22,387 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 18:39:22,387 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 68.8ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:39:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 18:39:22,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 18:39:22,389 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) [2021-05-02 18:39:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 18:39:22,389 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-05-02 18:39:22,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:22,390 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 18:39:22,390 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) [2021-05-02 18:39:22,390 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 18:39:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:39:22,390 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:22,390 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:22,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:22,591 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:22,592 INFO L82 PathProgramCache]: Analyzing trace with hash -355394621, now seen corresponding path program 2 times [2021-05-02 18:39:22,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:22,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585908673] [2021-05-02 18:39:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 18:39:22,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:22,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585908673] [2021-05-02 18:39:22,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585908673] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:39:22,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:39:22,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:39:22,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360865224] [2021-05-02 18:39:22,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:39:22,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:22,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:39:22,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:39:22,634 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) [2021-05-02 18:39:22,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:22,704 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-05-02 18:39:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:39:22,704 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 [2021-05-02 18:39:22,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:22,705 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:39:22,705 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 18:39:22,705 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:39:22,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 18:39:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-02 18:39:22,707 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) [2021-05-02 18:39:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-05-02 18:39:22,707 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2021-05-02 18:39:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:22,708 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-05-02 18:39:22,708 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) [2021-05-02 18:39:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-05-02 18:39:22,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 18:39:22,708 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:22,708 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:22,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 18:39:22,709 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:22,709 INFO L82 PathProgramCache]: Analyzing trace with hash 987258878, now seen corresponding path program 1 times [2021-05-02 18:39:22,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:22,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120935644] [2021-05-02 18:39:22,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:39:22,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:22,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120935644] [2021-05-02 18:39:22,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120935644] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:22,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656983898] [2021-05-02 18:39:22,762 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 [2021-05-02 18:39:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:22,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:39:22,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:22,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:22,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:22,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:22,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:39:22,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656983898] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:22,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:22,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-02 18:39:22,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746777544] [2021-05-02 18:39:22,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 18:39:22,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:22,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 18:39:22,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:39:22,878 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) [2021-05-02 18:39:23,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:23,013 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-02 18:39:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 18:39:23,013 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 [2021-05-02 18:39:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:23,014 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:39:23,014 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 18:39:23,014 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:39:23,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 18:39:23,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-02 18:39:23,016 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) [2021-05-02 18:39:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-05-02 18:39:23,017 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-05-02 18:39:23,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:23,017 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-05-02 18:39:23,017 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) [2021-05-02 18:39:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-05-02 18:39:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 18:39:23,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:23,018 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:23,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:23,237 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:23,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:23,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1311371174, now seen corresponding path program 2 times [2021-05-02 18:39:23,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:23,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570821096] [2021-05-02 18:39:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:39:23,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:23,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570821096] [2021-05-02 18:39:23,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570821096] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:23,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120260554] [2021-05-02 18:39:23,322 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 [2021-05-02 18:39:23,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:39:23,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:23,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:39:23,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:23,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:23,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:23,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:23,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:23,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:23,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:39:23,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120260554] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:23,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:23,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 18:39:23,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106970520] [2021-05-02 18:39:23,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:39:23,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:23,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:39:23,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:39:23,399 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) [2021-05-02 18:39:23,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:23,513 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-02 18:39:23,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:39:23,513 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 [2021-05-02 18:39:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:23,514 INFO L225 Difference]: With dead ends: 24 [2021-05-02 18:39:23,514 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 18:39:23,514 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:39:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 18:39:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 18:39:23,516 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) [2021-05-02 18:39:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 18:39:23,516 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-05-02 18:39:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:23,516 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 18:39:23,516 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) [2021-05-02 18:39:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 18:39:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 18:39:23,517 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:23,517 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:23,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:23,738 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:23,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:23,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1613306294, now seen corresponding path program 3 times [2021-05-02 18:39:23,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:23,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424831329] [2021-05-02 18:39:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:39:23,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:23,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424831329] [2021-05-02 18:39:23,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424831329] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:23,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918941420] [2021-05-02 18:39:23,806 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 [2021-05-02 18:39:23,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 18:39:23,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:23,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:39:23,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:23,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:23,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:23,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:23,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-05-02 18:39:23,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918941420] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:23,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:23,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-05-02 18:39:23,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2689552] [2021-05-02 18:39:23,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:39:23,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:23,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:39:23,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:39:23,915 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) [2021-05-02 18:39:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:24,115 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-05-02 18:39:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:39:24,115 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 [2021-05-02 18:39:24,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:24,116 INFO L225 Difference]: With dead ends: 29 [2021-05-02 18:39:24,116 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 18:39:24,117 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 199.4ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:39:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 18:39:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-02 18:39:24,119 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) [2021-05-02 18:39:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-02 18:39:24,119 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-05-02 18:39:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:24,119 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-02 18:39:24,119 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) [2021-05-02 18:39:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-02 18:39:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 18:39:24,120 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:24,120 INFO L523 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:24,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:24,330 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:24,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:24,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053811, now seen corresponding path program 4 times [2021-05-02 18:39:24,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:24,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611572384] [2021-05-02 18:39:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:24,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:39:24,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:24,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611572384] [2021-05-02 18:39:24,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611572384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:24,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432747223] [2021-05-02 18:39:24,498 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 [2021-05-02 18:39:24,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:39:24,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:24,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:39:24,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:24,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:24,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:24,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:24,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:24,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:24,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:24,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:24,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:24,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:24,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:39:24,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432747223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:24,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:24,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 18:39:24,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876992260] [2021-05-02 18:39:24,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:39:24,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:24,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:39:24,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:39:24,583 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) [2021-05-02 18:39:24,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:24,762 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-02 18:39:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:39:24,763 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 [2021-05-02 18:39:24,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:24,763 INFO L225 Difference]: With dead ends: 30 [2021-05-02 18:39:24,763 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 18:39:24,763 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 202.4ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:39:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 18:39:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 18:39:24,765 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) [2021-05-02 18:39:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-02 18:39:24,766 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2021-05-02 18:39:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:24,766 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-02 18:39:24,766 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) [2021-05-02 18:39:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-02 18:39:24,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 18:39:24,766 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:24,766 INFO L523 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:24,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:24,983 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:24,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash 163921129, now seen corresponding path program 5 times [2021-05-02 18:39:24,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:24,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374930366] [2021-05-02 18:39:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:25,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:39:25,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:25,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374930366] [2021-05-02 18:39:25,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374930366] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:25,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086799463] [2021-05-02 18:39:25,066 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 [2021-05-02 18:39:25,111 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-05-02 18:39:25,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:25,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:39:25,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:25,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:39:25,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086799463] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:25,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:25,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-02 18:39:25,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207523621] [2021-05-02 18:39:25,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:39:25,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:25,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:39:25,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:39:25,197 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) [2021-05-02 18:39:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:25,440 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-02 18:39:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:39:25,441 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 [2021-05-02 18:39:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:25,441 INFO L225 Difference]: With dead ends: 32 [2021-05-02 18:39:25,442 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 18:39:25,442 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 227.3ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:39:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 18:39:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 18:39:25,444 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) [2021-05-02 18:39:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-05-02 18:39:25,445 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2021-05-02 18:39:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:25,445 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-05-02 18:39:25,445 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) [2021-05-02 18:39:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-05-02 18:39:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 18:39:25,446 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:25,446 INFO L523 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:25,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:25,668 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:25,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:25,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1704405573, now seen corresponding path program 6 times [2021-05-02 18:39:25,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:25,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986594467] [2021-05-02 18:39:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:25,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:39:25,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:25,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986594467] [2021-05-02 18:39:25,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986594467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:25,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631619456] [2021-05-02 18:39:25,782 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 [2021-05-02 18:39:25,831 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-02 18:39:25,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:25,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:39:25,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:25,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:39:25,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631619456] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:25,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:25,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2021-05-02 18:39:25,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583238064] [2021-05-02 18:39:25,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:39:25,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:25,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:39:25,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:39:25,939 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) [2021-05-02 18:39:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:26,259 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-02 18:39:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 18:39:26,259 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 [2021-05-02 18:39:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:26,260 INFO L225 Difference]: With dead ends: 38 [2021-05-02 18:39:26,260 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 18:39:26,260 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 343.6ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:39:26,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 18:39:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 18:39:26,262 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) [2021-05-02 18:39:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-02 18:39:26,263 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 31 [2021-05-02 18:39:26,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:26,263 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-02 18:39:26,263 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) [2021-05-02 18:39:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-02 18:39:26,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 18:39:26,264 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:26,264 INFO L523 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:26,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:26,485 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:26,485 INFO L82 PathProgramCache]: Analyzing trace with hash -747599783, now seen corresponding path program 7 times [2021-05-02 18:39:26,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:26,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396541832] [2021-05-02 18:39:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:39:26,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:26,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396541832] [2021-05-02 18:39:26,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396541832] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:26,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734146473] [2021-05-02 18:39:26,618 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 [2021-05-02 18:39:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:26,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:39:26,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:26,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:39:26,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734146473] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:26,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:26,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-02 18:39:26,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112707905] [2021-05-02 18:39:26,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:39:26,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:26,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:39:26,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:39:26,768 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) [2021-05-02 18:39:27,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:27,130 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-05-02 18:39:27,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:39:27,130 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 [2021-05-02 18:39:27,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:27,131 INFO L225 Difference]: With dead ends: 40 [2021-05-02 18:39:27,131 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 18:39:27,131 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 355.6ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:39:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 18:39:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-02 18:39:27,133 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) [2021-05-02 18:39:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-02 18:39:27,134 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 37 [2021-05-02 18:39:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:27,134 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-02 18:39:27,134 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) [2021-05-02 18:39:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-02 18:39:27,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 18:39:27,135 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:27,135 INFO L523 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:27,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 18:39:27,357 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:27,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:27,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1906137525, now seen corresponding path program 8 times [2021-05-02 18:39:27,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:27,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375993429] [2021-05-02 18:39:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:39:27,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:27,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375993429] [2021-05-02 18:39:27,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375993429] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:27,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716441316] [2021-05-02 18:39:27,498 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 [2021-05-02 18:39:27,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:39:27,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:27,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:39:27,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:27,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:39:27,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716441316] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:27,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:27,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 18:39:27,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475421439] [2021-05-02 18:39:27,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:39:27,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:27,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:39:27,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:39:27,666 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) [2021-05-02 18:39:28,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:28,060 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-02 18:39:28,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:39:28,061 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 [2021-05-02 18:39:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:28,061 INFO L225 Difference]: With dead ends: 42 [2021-05-02 18:39:28,061 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 18:39:28,062 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 392.7ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:39:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 18:39:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 18:39:28,064 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) [2021-05-02 18:39:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-05-02 18:39:28,065 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 39 [2021-05-02 18:39:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:28,065 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-05-02 18:39:28,065 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) [2021-05-02 18:39:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-05-02 18:39:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 18:39:28,066 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:28,066 INFO L523 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:28,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:28,288 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:28,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:28,289 INFO L82 PathProgramCache]: Analyzing trace with hash 937116689, now seen corresponding path program 9 times [2021-05-02 18:39:28,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:28,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497795364] [2021-05-02 18:39:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:28,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 39 proven. 156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:39:28,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:28,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497795364] [2021-05-02 18:39:28,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497795364] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:28,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164638705] [2021-05-02 18:39:28,429 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 [2021-05-02 18:39:28,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 18:39:28,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:28,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:39:28,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:28,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:28,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:28,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:28,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:28,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:28,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-05-02 18:39:28,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164638705] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:28,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:28,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2021-05-02 18:39:28,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214949082] [2021-05-02 18:39:28,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:39:28,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:28,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:39:28,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:39:28,610 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) [2021-05-02 18:39:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:29,128 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-05-02 18:39:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 18:39:29,128 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 [2021-05-02 18:39:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:29,130 INFO L225 Difference]: With dead ends: 47 [2021-05-02 18:39:29,130 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 18:39:29,131 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 517.9ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:39:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 18:39:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-02 18:39:29,141 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) [2021-05-02 18:39:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-02 18:39:29,141 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 41 [2021-05-02 18:39:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:29,142 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-02 18:39:29,142 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) [2021-05-02 18:39:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-02 18:39:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 18:39:29,142 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:29,142 INFO L523 BasicCegarLoop]: trace histogram [16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:29,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:29,343 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:29,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:29,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1270675160, now seen corresponding path program 10 times [2021-05-02 18:39:29,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:29,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016132762] [2021-05-02 18:39:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:29,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:39:29,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:29,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016132762] [2021-05-02 18:39:29,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016132762] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:29,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617309807] [2021-05-02 18:39:29,461 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 [2021-05-02 18:39:29,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:39:29,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:29,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:39:29,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:29,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:39:29,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617309807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:29,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:29,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 18:39:29,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441783730] [2021-05-02 18:39:29,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 18:39:29,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:29,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 18:39:29,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:39:29,620 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) [2021-05-02 18:39:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:29,979 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-05-02 18:39:29,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 18:39:29,979 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 [2021-05-02 18:39:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:29,980 INFO L225 Difference]: With dead ends: 48 [2021-05-02 18:39:29,980 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 18:39:29,981 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 372.3ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:39:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 18:39:29,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 18:39:29,982 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) [2021-05-02 18:39:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-05-02 18:39:29,983 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 45 [2021-05-02 18:39:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:29,983 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-05-02 18:39:29,983 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) [2021-05-02 18:39:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-05-02 18:39:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 18:39:29,984 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:29,984 INFO L523 BasicCegarLoop]: trace histogram [17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:30,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 18:39:30,199 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:30,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:30,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1918452092, now seen corresponding path program 11 times [2021-05-02 18:39:30,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:30,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362742944] [2021-05-02 18:39:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:39:30,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:30,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362742944] [2021-05-02 18:39:30,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362742944] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:30,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840169343] [2021-05-02 18:39:30,340 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 [2021-05-02 18:39:30,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 18:39:30,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:30,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:39:30,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:30,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:39:30,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840169343] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:30,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:30,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-02 18:39:30,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022675353] [2021-05-02 18:39:30,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:39:30,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:30,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:39:30,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:39:30,457 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) [2021-05-02 18:39:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:30,843 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-02 18:39:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 18:39:30,844 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 [2021-05-02 18:39:30,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:30,844 INFO L225 Difference]: With dead ends: 50 [2021-05-02 18:39:30,844 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 18:39:30,845 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 416.4ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:39:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 18:39:30,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-02 18:39:30,846 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) [2021-05-02 18:39:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-05-02 18:39:30,847 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 47 [2021-05-02 18:39:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:30,848 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-05-02 18:39:30,848 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) [2021-05-02 18:39:30,848 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-05-02 18:39:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 18:39:30,848 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:30,848 INFO L523 BasicCegarLoop]: trace histogram [18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:31,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 18:39:31,064 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:31,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1661825824, now seen corresponding path program 12 times [2021-05-02 18:39:31,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:31,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127296764] [2021-05-02 18:39:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:31,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 80 proven. 240 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:39:31,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:31,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127296764] [2021-05-02 18:39:31,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127296764] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:31,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47860887] [2021-05-02 18:39:31,223 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 [2021-05-02 18:39:31,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-02 18:39:31,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:31,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 18:39:31,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:31,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:31,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:31,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:31,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:31,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:31,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:31,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:31,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 105 proven. 9 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-05-02 18:39:31,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47860887] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:31,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:31,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2021-05-02 18:39:31,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628558199] [2021-05-02 18:39:31,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 18:39:31,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:31,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 18:39:31,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:39:31,402 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) [2021-05-02 18:39:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:31,962 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-05-02 18:39:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:39:31,963 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 [2021-05-02 18:39:31,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:31,963 INFO L225 Difference]: With dead ends: 55 [2021-05-02 18:39:31,963 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 18:39:31,964 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 654.5ms TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:39:31,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 18:39:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-02 18:39:31,965 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) [2021-05-02 18:39:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-05-02 18:39:31,966 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 49 [2021-05-02 18:39:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:31,966 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-05-02 18:39:31,966 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) [2021-05-02 18:39:31,966 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-05-02 18:39:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 18:39:31,966 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:31,967 INFO L523 BasicCegarLoop]: trace histogram [20, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:32,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 18:39:32,183 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:32,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:32,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1205387721, now seen corresponding path program 13 times [2021-05-02 18:39:32,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:32,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943151090] [2021-05-02 18:39:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:32,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:39:32,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:32,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943151090] [2021-05-02 18:39:32,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943151090] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:32,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518670481] [2021-05-02 18:39:32,368 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 [2021-05-02 18:39:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:32,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:39:32,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:32,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:39:32,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518670481] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:32,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:32,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-02 18:39:32,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732649422] [2021-05-02 18:39:32,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 18:39:32,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:32,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 18:39:32,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:39:32,511 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) [2021-05-02 18:39:32,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:32,977 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-02 18:39:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 18:39:32,977 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 [2021-05-02 18:39:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:32,978 INFO L225 Difference]: With dead ends: 56 [2021-05-02 18:39:32,978 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 18:39:32,978 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 495.5ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:39:32,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 18:39:32,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 18:39:32,980 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) [2021-05-02 18:39:32,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-02 18:39:32,980 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 53 [2021-05-02 18:39:32,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:32,980 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-02 18:39:32,980 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) [2021-05-02 18:39:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-02 18:39:32,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 18:39:32,981 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:32,981 INFO L523 BasicCegarLoop]: trace histogram [21, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:33,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:33,186 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:33,186 INFO L82 PathProgramCache]: Analyzing trace with hash 698210195, now seen corresponding path program 14 times [2021-05-02 18:39:33,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:33,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800680294] [2021-05-02 18:39:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:39:33,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:33,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800680294] [2021-05-02 18:39:33,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800680294] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:33,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65427998] [2021-05-02 18:39:33,429 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 [2021-05-02 18:39:33,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:39:33,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:33,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:39:33,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:33,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:39:33,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65427998] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:33,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:33,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 18:39:33,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200511541] [2021-05-02 18:39:33,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 18:39:33,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:33,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 18:39:33,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:39:33,611 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) [2021-05-02 18:39:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:34,091 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-05-02 18:39:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:39:34,091 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 [2021-05-02 18:39:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:34,091 INFO L225 Difference]: With dead ends: 58 [2021-05-02 18:39:34,092 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 18:39:34,092 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 571.8ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:39:34,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 18:39:34,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-02 18:39:34,093 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) [2021-05-02 18:39:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2021-05-02 18:39:34,094 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 55 [2021-05-02 18:39:34,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:34,094 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2021-05-02 18:39:34,094 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) [2021-05-02 18:39:34,094 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2021-05-02 18:39:34,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 18:39:34,095 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:34,095 INFO L523 BasicCegarLoop]: trace histogram [22, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:34,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:34,303 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:34,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:34,304 INFO L82 PathProgramCache]: Analyzing trace with hash 399739375, now seen corresponding path program 15 times [2021-05-02 18:39:34,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:34,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283023715] [2021-05-02 18:39:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:34,502 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:39:34,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:34,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283023715] [2021-05-02 18:39:34,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283023715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:34,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593404816] [2021-05-02 18:39:34,503 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 [2021-05-02 18:39:34,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 18:39:34,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:34,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:39:34,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:34,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:34,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:34,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:34,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:34,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:34,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:34,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:34,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:34,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:34,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 162 proven. 16 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-05-02 18:39:34,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593404816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:34,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:34,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 27 [2021-05-02 18:39:34,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921496294] [2021-05-02 18:39:34,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:39:34,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:34,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:39:34,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:39:34,711 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) [2021-05-02 18:39:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:35,518 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-05-02 18:39:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:39:35,519 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 [2021-05-02 18:39:35,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:35,519 INFO L225 Difference]: With dead ends: 63 [2021-05-02 18:39:35,519 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 18:39:35,520 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 895.1ms TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:39:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 18:39:35,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-02 18:39:35,522 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) [2021-05-02 18:39:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-05-02 18:39:35,523 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 57 [2021-05-02 18:39:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:35,524 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-05-02 18:39:35,524 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) [2021-05-02 18:39:35,524 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-05-02 18:39:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 18:39:35,525 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:35,525 INFO L523 BasicCegarLoop]: trace histogram [24, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:35,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:35,745 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:35,745 INFO L82 PathProgramCache]: Analyzing trace with hash -837478522, now seen corresponding path program 16 times [2021-05-02 18:39:35,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:35,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602999897] [2021-05-02 18:39:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:39:35,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:35,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602999897] [2021-05-02 18:39:35,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602999897] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:35,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313468807] [2021-05-02 18:39:35,949 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 [2021-05-02 18:39:36,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:39:36,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:36,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:39:36,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:36,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:39:36,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313468807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:36,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:36,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-02 18:39:36,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456450300] [2021-05-02 18:39:36,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 18:39:36,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:36,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 18:39:36,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:39:36,155 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) [2021-05-02 18:39:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:36,726 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-05-02 18:39:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:39:36,727 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 [2021-05-02 18:39:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:36,727 INFO L225 Difference]: With dead ends: 64 [2021-05-02 18:39:36,727 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 18:39:36,728 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 639.3ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:39:36,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 18:39:36,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 18:39:36,729 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) [2021-05-02 18:39:36,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-05-02 18:39:36,730 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 61 [2021-05-02 18:39:36,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:36,730 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-05-02 18:39:36,730 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) [2021-05-02 18:39:36,730 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-05-02 18:39:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 18:39:36,730 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:36,730 INFO L523 BasicCegarLoop]: trace histogram [25, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:36,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 18:39:36,933 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:36,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:36,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1736796958, now seen corresponding path program 17 times [2021-05-02 18:39:36,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:36,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467804424] [2021-05-02 18:39:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:37,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:39:37,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:37,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467804424] [2021-05-02 18:39:37,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467804424] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:37,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124862355] [2021-05-02 18:39:37,224 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 [2021-05-02 18:39:37,349 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-02 18:39:37,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:37,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:39:37,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:37,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:39:37,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124862355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:37,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:37,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-02 18:39:37,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912734810] [2021-05-02 18:39:37,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 18:39:37,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:37,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 18:39:37,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:39:37,465 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) [2021-05-02 18:39:38,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:38,074 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-05-02 18:39:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 18:39:38,074 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 [2021-05-02 18:39:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:38,075 INFO L225 Difference]: With dead ends: 66 [2021-05-02 18:39:38,075 INFO L226 Difference]: Without dead ends: 66 [2021-05-02 18:39:38,075 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 754.0ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:39:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-02 18:39:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-02 18:39:38,077 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) [2021-05-02 18:39:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-05-02 18:39:38,077 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 63 [2021-05-02 18:39:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:38,077 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-05-02 18:39:38,077 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) [2021-05-02 18:39:38,077 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-05-02 18:39:38,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 18:39:38,078 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:38,078 INFO L523 BasicCegarLoop]: trace histogram [26, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:38,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 18:39:38,297 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:38,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:38,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1601579838, now seen corresponding path program 18 times [2021-05-02 18:39:38,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:38,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667527637] [2021-05-02 18:39:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:38,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 198 proven. 462 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:39:38,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:38,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667527637] [2021-05-02 18:39:38,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667527637] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:38,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216571598] [2021-05-02 18:39:38,528 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 [2021-05-02 18:39:38,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-02 18:39:38,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:38,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:39:38,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:38,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 231 proven. 25 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-05-02 18:39:38,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216571598] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:38,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:38,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2021-05-02 18:39:38,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567276634] [2021-05-02 18:39:38,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:39:38,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:38,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:39:38,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:39:38,785 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) [2021-05-02 18:39:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:39,657 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-05-02 18:39:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 18:39:39,657 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 [2021-05-02 18:39:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:39,658 INFO L225 Difference]: With dead ends: 71 [2021-05-02 18:39:39,658 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 18:39:39,659 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1035.3ms TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:39:39,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 18:39:39,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-02 18:39:39,661 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) [2021-05-02 18:39:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-05-02 18:39:39,661 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 65 [2021-05-02 18:39:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:39,661 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-05-02 18:39:39,661 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) [2021-05-02 18:39:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-05-02 18:39:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 18:39:39,662 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:39,662 INFO L523 BasicCegarLoop]: trace histogram [28, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:39,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 18:39:39,884 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:39,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:39,885 INFO L82 PathProgramCache]: Analyzing trace with hash 852002069, now seen corresponding path program 19 times [2021-05-02 18:39:39,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:39,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995527908] [2021-05-02 18:39:39,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:40,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:39:40,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:40,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995527908] [2021-05-02 18:39:40,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995527908] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:40,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193122830] [2021-05-02 18:39:40,149 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 [2021-05-02 18:39:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:40,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:39:40,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:40,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:39:40,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193122830] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:40,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:40,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-02 18:39:40,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478193937] [2021-05-02 18:39:40,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:39:40,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:40,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:39:40,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:39:40,308 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) [2021-05-02 18:39:40,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:40,964 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-05-02 18:39:40,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 18:39:40,965 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 [2021-05-02 18:39:40,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:40,965 INFO L225 Difference]: With dead ends: 72 [2021-05-02 18:39:40,965 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 18:39:40,966 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 765.6ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:39:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 18:39:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-02 18:39:40,967 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) [2021-05-02 18:39:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-05-02 18:39:40,967 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 69 [2021-05-02 18:39:40,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:40,968 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-05-02 18:39:40,968 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) [2021-05-02 18:39:40,968 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-05-02 18:39:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 18:39:40,968 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:40,968 INFO L523 BasicCegarLoop]: trace histogram [29, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:41,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 18:39:41,185 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash 2063132273, now seen corresponding path program 20 times [2021-05-02 18:39:41,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:41,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580182022] [2021-05-02 18:39:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:41,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:39:41,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:41,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580182022] [2021-05-02 18:39:41,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580182022] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:41,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467525533] [2021-05-02 18:39:41,473 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 [2021-05-02 18:39:41,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:39:41,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:41,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:39:41,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:41,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:39:41,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467525533] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:41,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:41,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 18:39:41,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180679028] [2021-05-02 18:39:41,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 18:39:41,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:41,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 18:39:41,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:39:41,639 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) [2021-05-02 18:39:42,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:42,332 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-02 18:39:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:39:42,333 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 [2021-05-02 18:39:42,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:42,334 INFO L225 Difference]: With dead ends: 74 [2021-05-02 18:39:42,334 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 18:39:42,334 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 776.1ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:39:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 18:39:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-02 18:39:42,336 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) [2021-05-02 18:39:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-02 18:39:42,337 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 71 [2021-05-02 18:39:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:42,337 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-02 18:39:42,337 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) [2021-05-02 18:39:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-02 18:39:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 18:39:42,337 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:42,337 INFO L523 BasicCegarLoop]: trace histogram [30, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:42,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 18:39:42,554 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash 2023121101, now seen corresponding path program 21 times [2021-05-02 18:39:42,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:42,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924971528] [2021-05-02 18:39:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:42,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 275 proven. 600 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:39:42,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:42,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924971528] [2021-05-02 18:39:42,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924971528] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:42,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608791942] [2021-05-02 18:39:42,832 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 [2021-05-02 18:39:42,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-02 18:39:42,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:42,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 18:39:42,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:42,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:42,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:42,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:42,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:42,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:42,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:42,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:42,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:43,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:43,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:43,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:43,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:43,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:43,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:43,106 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-05-02 18:39:43,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608791942] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:43,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:43,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2021-05-02 18:39:43,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394966853] [2021-05-02 18:39:43,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 18:39:43,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:43,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 18:39:43,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:39:43,108 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) [2021-05-02 18:39:44,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:44,289 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-05-02 18:39:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:39:44,289 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 [2021-05-02 18:39:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:44,290 INFO L225 Difference]: With dead ends: 79 [2021-05-02 18:39:44,290 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 18:39:44,290 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1423.1ms TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:39:44,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 18:39:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-02 18:39:44,292 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) [2021-05-02 18:39:44,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-05-02 18:39:44,292 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 73 [2021-05-02 18:39:44,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:44,292 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-05-02 18:39:44,292 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) [2021-05-02 18:39:44,293 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-05-02 18:39:44,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 18:39:44,293 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:44,293 INFO L523 BasicCegarLoop]: trace histogram [32, 25, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:44,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:44,509 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:44,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:44,510 INFO L82 PathProgramCache]: Analyzing trace with hash 264337124, now seen corresponding path program 22 times [2021-05-02 18:39:44,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:44,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429529538] [2021-05-02 18:39:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:39:44,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:44,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429529538] [2021-05-02 18:39:44,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429529538] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:44,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804380457] [2021-05-02 18:39:44,822 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 [2021-05-02 18:39:44,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:39:44,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:44,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:39:44,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:44,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:39:44,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804380457] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:44,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:44,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-02 18:39:44,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769270961] [2021-05-02 18:39:44,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 18:39:44,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:44,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 18:39:44,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:39:44,984 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) [2021-05-02 18:39:45,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:45,872 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-05-02 18:39:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 18:39:45,872 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 [2021-05-02 18:39:45,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:45,872 INFO L225 Difference]: With dead ends: 80 [2021-05-02 18:39:45,873 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 18:39:45,873 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1012.2ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:39:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 18:39:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-02 18:39:45,874 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) [2021-05-02 18:39:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-05-02 18:39:45,875 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 77 [2021-05-02 18:39:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:45,875 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-05-02 18:39:45,875 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) [2021-05-02 18:39:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-05-02 18:39:45,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 18:39:45,875 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:45,876 INFO L523 BasicCegarLoop]: trace histogram [33, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:46,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 18:39:46,091 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:46,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:46,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1587067968, now seen corresponding path program 23 times [2021-05-02 18:39:46,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:46,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241283345] [2021-05-02 18:39:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:39:46,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:46,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241283345] [2021-05-02 18:39:46,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241283345] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:46,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583404218] [2021-05-02 18:39:46,423 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 [2021-05-02 18:39:46,478 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-02 18:39:46,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:46,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:39:46,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:46,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:39:46,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583404218] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:46,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:46,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-02 18:39:46,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657324259] [2021-05-02 18:39:46,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:39:46,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:46,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:39:46,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:39:46,654 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) [2021-05-02 18:39:47,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:47,600 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-05-02 18:39:47,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 18:39:47,600 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 [2021-05-02 18:39:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:47,601 INFO L225 Difference]: With dead ends: 82 [2021-05-02 18:39:47,601 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 18:39:47,601 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1104.9ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:39:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 18:39:47,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-02 18:39:47,603 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) [2021-05-02 18:39:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-05-02 18:39:47,603 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 79 [2021-05-02 18:39:47,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:47,603 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-05-02 18:39:47,603 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) [2021-05-02 18:39:47,603 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-05-02 18:39:47,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 18:39:47,604 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:47,604 INFO L523 BasicCegarLoop]: trace histogram [34, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:47,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:47,819 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:47,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:47,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1421089436, now seen corresponding path program 24 times [2021-05-02 18:39:47,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:47,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815219940] [2021-05-02 18:39:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:48,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 364 proven. 756 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:39:48,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:48,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815219940] [2021-05-02 18:39:48,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815219940] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:48,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965396791] [2021-05-02 18:39:48,168 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 [2021-05-02 18:39:48,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 18:39:48,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:48,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:39:48,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:48,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 405 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-05-02 18:39:48,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965396791] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:48,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:48,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10] total 39 [2021-05-02 18:39:48,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132433433] [2021-05-02 18:39:48,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:39:48,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:48,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:39:48,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:39:48,518 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) [2021-05-02 18:39:49,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:49,891 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-05-02 18:39:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:39:49,892 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 [2021-05-02 18:39:49,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:49,892 INFO L225 Difference]: With dead ends: 87 [2021-05-02 18:39:49,893 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 18:39:49,894 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1720.6ms TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:39:49,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 18:39:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-02 18:39:49,898 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) [2021-05-02 18:39:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-05-02 18:39:49,899 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 81 [2021-05-02 18:39:49,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:49,899 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-05-02 18:39:49,899 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) [2021-05-02 18:39:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-05-02 18:39:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 18:39:49,899 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:49,900 INFO L523 BasicCegarLoop]: trace histogram [36, 28, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:50,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 18:39:50,113 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:50,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1514396915, now seen corresponding path program 25 times [2021-05-02 18:39:50,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:50,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505475109] [2021-05-02 18:39:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:50,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:39:50,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:50,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505475109] [2021-05-02 18:39:50,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505475109] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:50,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184906081] [2021-05-02 18:39:50,507 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 [2021-05-02 18:39:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:50,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:39:50,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:50,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:39:50,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184906081] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:50,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:50,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-02 18:39:50,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093298765] [2021-05-02 18:39:50,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 18:39:50,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:50,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 18:39:50,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:39:50,673 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) [2021-05-02 18:39:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:51,700 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2021-05-02 18:39:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 18:39:51,701 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 [2021-05-02 18:39:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:51,701 INFO L225 Difference]: With dead ends: 88 [2021-05-02 18:39:51,701 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 18:39:51,702 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1226.2ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 18:39:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 18:39:51,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-02 18:39:51,704 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) [2021-05-02 18:39:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-05-02 18:39:51,705 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 85 [2021-05-02 18:39:51,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:51,705 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-05-02 18:39:51,705 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) [2021-05-02 18:39:51,705 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-05-02 18:39:51,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 18:39:51,705 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:51,706 INFO L523 BasicCegarLoop]: trace histogram [37, 29, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:51,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:51,929 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:51,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:51,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1667365297, now seen corresponding path program 26 times [2021-05-02 18:39:51,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:51,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832289985] [2021-05-02 18:39:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:52,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:39:52,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:52,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832289985] [2021-05-02 18:39:52,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832289985] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:52,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183748593] [2021-05-02 18:39:52,373 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 [2021-05-02 18:39:52,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:39:52,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:52,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:39:52,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:52,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:39:52,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183748593] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:52,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:52,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 18:39:52,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381876128] [2021-05-02 18:39:52,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 18:39:52,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:52,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 18:39:52,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:39:52,603 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) [2021-05-02 18:39:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:53,751 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2021-05-02 18:39:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:39:53,751 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 [2021-05-02 18:39:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:53,752 INFO L225 Difference]: With dead ends: 90 [2021-05-02 18:39:53,752 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 18:39:53,753 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1371.5ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:39:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 18:39:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-02 18:39:53,754 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) [2021-05-02 18:39:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-05-02 18:39:53,754 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 87 [2021-05-02 18:39:53,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:53,754 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-05-02 18:39:53,755 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) [2021-05-02 18:39:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-05-02 18:39:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 18:39:53,755 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:53,755 INFO L523 BasicCegarLoop]: trace histogram [38, 30, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:53,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 18:39:53,971 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:53,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:53,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1324136277, now seen corresponding path program 27 times [2021-05-02 18:39:53,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:53,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970730277] [2021-05-02 18:39:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:54,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 465 proven. 930 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:39:54,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:54,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970730277] [2021-05-02 18:39:54,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970730277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:54,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72362006] [2021-05-02 18:39:54,418 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 [2021-05-02 18:39:54,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-02 18:39:54,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:54,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:39:54,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:54,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 510 proven. 64 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2021-05-02 18:39:54,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72362006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:54,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:54,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 11] total 43 [2021-05-02 18:39:54,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416786538] [2021-05-02 18:39:54,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:39:54,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:54,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:39:54,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:39:54,851 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) [2021-05-02 18:39:56,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:56,521 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-05-02 18:39:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 18:39:56,522 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 [2021-05-02 18:39:56,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:56,522 INFO L225 Difference]: With dead ends: 95 [2021-05-02 18:39:56,523 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 18:39:56,523 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 2138.9ms TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:39:56,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 18:39:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-02 18:39:56,524 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) [2021-05-02 18:39:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-05-02 18:39:56,525 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 89 [2021-05-02 18:39:56,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:56,525 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-05-02 18:39:56,525 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) [2021-05-02 18:39:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-05-02 18:39:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 18:39:56,526 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:56,526 INFO L523 BasicCegarLoop]: trace histogram [40, 31, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:56,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:39:56,741 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:56,742 INFO L82 PathProgramCache]: Analyzing trace with hash -229136574, now seen corresponding path program 28 times [2021-05-02 18:39:56,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:56,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758776670] [2021-05-02 18:39:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:57,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:39:57,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:57,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758776670] [2021-05-02 18:39:57,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758776670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:57,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681031916] [2021-05-02 18:39:57,178 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 [2021-05-02 18:39:57,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:39:57,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:57,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:39:57,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:57,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:39:57,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681031916] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:57,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:57,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 18:39:57,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027710125] [2021-05-02 18:39:57,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 18:39:57,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:57,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 18:39:57,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:39:57,359 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) [2021-05-02 18:39:58,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:39:58,494 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-05-02 18:39:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:39:58,494 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 [2021-05-02 18:39:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:39:58,494 INFO L225 Difference]: With dead ends: 96 [2021-05-02 18:39:58,494 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 18:39:58,495 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1436.1ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:39:58,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 18:39:58,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-02 18:39:58,496 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) [2021-05-02 18:39:58,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2021-05-02 18:39:58,497 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 93 [2021-05-02 18:39:58,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:39:58,497 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2021-05-02 18:39:58,497 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) [2021-05-02 18:39:58,497 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2021-05-02 18:39:58,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 18:39:58,497 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:39:58,497 INFO L523 BasicCegarLoop]: trace histogram [41, 32, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:39:58,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 18:39:58,713 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:39:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:39:58,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2031137950, now seen corresponding path program 29 times [2021-05-02 18:39:58,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:39:58,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078398413] [2021-05-02 18:39:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:39:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:59,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:39:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:39:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:39:59,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:39:59,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078398413] [2021-05-02 18:39:59,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078398413] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:59,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621754350] [2021-05-02 18:39:59,196 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 [2021-05-02 18:39:59,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 18:39:59,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:39:59,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:39:59,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:39:59,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:39:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:39:59,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621754350] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:39:59,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:39:59,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-02 18:39:59,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763051432] [2021-05-02 18:39:59,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 18:39:59,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:39:59,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 18:39:59,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 18:39:59,393 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) [2021-05-02 18:40:00,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:00,647 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-05-02 18:40:00,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 18:40:00,647 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 [2021-05-02 18:40:00,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:00,648 INFO L225 Difference]: With dead ends: 98 [2021-05-02 18:40:00,648 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 18:40:00,648 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1513.9ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:40:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 18:40:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 18:40:00,650 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) [2021-05-02 18:40:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-05-02 18:40:00,650 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 95 [2021-05-02 18:40:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:00,650 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-05-02 18:40:00,650 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) [2021-05-02 18:40:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-05-02 18:40:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 18:40:00,651 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:00,651 INFO L523 BasicCegarLoop]: trace histogram [42, 33, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:00,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:40:00,865 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:00,865 INFO L82 PathProgramCache]: Analyzing trace with hash 901503738, now seen corresponding path program 30 times [2021-05-02 18:40:00,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:00,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323322606] [2021-05-02 18:40:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 578 proven. 1122 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:40:01,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:01,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323322606] [2021-05-02 18:40:01,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323322606] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:01,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396894244] [2021-05-02 18:40:01,382 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 [2021-05-02 18:40:01,455 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-02 18:40:01,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:01,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:40:01,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:01,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 627 proven. 81 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2021-05-02 18:40:01,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396894244] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:01,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:01,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 47 [2021-05-02 18:40:01,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475605539] [2021-05-02 18:40:01,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 18:40:01,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:01,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 18:40:01,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 18:40:01,894 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) [2021-05-02 18:40:03,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:03,862 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-05-02 18:40:03,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:40:03,862 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 [2021-05-02 18:40:03,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:03,863 INFO L225 Difference]: With dead ends: 103 [2021-05-02 18:40:03,863 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 18:40:03,864 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2548.1ms TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:40:03,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 18:40:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-02 18:40:03,865 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) [2021-05-02 18:40:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-05-02 18:40:03,865 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 97 [2021-05-02 18:40:03,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:03,866 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-05-02 18:40:03,866 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) [2021-05-02 18:40:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-05-02 18:40:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 18:40:03,866 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:03,866 INFO L523 BasicCegarLoop]: trace histogram [44, 34, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:04,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 18:40:04,082 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:04,082 INFO L82 PathProgramCache]: Analyzing trace with hash 29935057, now seen corresponding path program 31 times [2021-05-02 18:40:04,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:04,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572770121] [2021-05-02 18:40:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:04,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:40:04,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:04,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572770121] [2021-05-02 18:40:04,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572770121] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:04,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198797939] [2021-05-02 18:40:04,741 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 [2021-05-02 18:40:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:04,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 18:40:04,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:04,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:40:04,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198797939] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:04,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:04,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-02 18:40:04,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211538065] [2021-05-02 18:40:04,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:40:04,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:04,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:40:04,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:40:04,985 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) [2021-05-02 18:40:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:06,378 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2021-05-02 18:40:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 18:40:06,378 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 [2021-05-02 18:40:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:06,379 INFO L225 Difference]: With dead ends: 104 [2021-05-02 18:40:06,379 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 18:40:06,379 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1857.7ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:40:06,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 18:40:06,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-02 18:40:06,381 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) [2021-05-02 18:40:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-05-02 18:40:06,382 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 101 [2021-05-02 18:40:06,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:06,382 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-05-02 18:40:06,382 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) [2021-05-02 18:40:06,382 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-05-02 18:40:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 18:40:06,382 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:06,382 INFO L523 BasicCegarLoop]: trace histogram [45, 35, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:06,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 18:40:06,599 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:06,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:06,599 INFO L82 PathProgramCache]: Analyzing trace with hash -2118338771, now seen corresponding path program 32 times [2021-05-02 18:40:06,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:06,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066827918] [2021-05-02 18:40:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:07,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:40:07,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:07,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066827918] [2021-05-02 18:40:07,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066827918] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:07,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200462849] [2021-05-02 18:40:07,230 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 [2021-05-02 18:40:07,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:40:07,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:07,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:40:07,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:07,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:40:07,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200462849] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:07,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:07,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 18:40:07,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789053516] [2021-05-02 18:40:07,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 18:40:07,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:07,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 18:40:07,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:40:07,473 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) [2021-05-02 18:40:09,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:09,050 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2021-05-02 18:40:09,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:40:09,050 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 [2021-05-02 18:40:09,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:09,051 INFO L225 Difference]: With dead ends: 106 [2021-05-02 18:40:09,051 INFO L226 Difference]: Without dead ends: 106 [2021-05-02 18:40:09,051 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1948.0ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:40:09,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-02 18:40:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-05-02 18:40:09,053 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) [2021-05-02 18:40:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2021-05-02 18:40:09,053 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 103 [2021-05-02 18:40:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:09,053 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2021-05-02 18:40:09,054 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) [2021-05-02 18:40:09,054 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2021-05-02 18:40:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 18:40:09,054 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:09,054 INFO L523 BasicCegarLoop]: trace histogram [46, 36, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:09,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 18:40:09,267 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:09,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:09,272 INFO L82 PathProgramCache]: Analyzing trace with hash -730218103, now seen corresponding path program 33 times [2021-05-02 18:40:09,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:09,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943505405] [2021-05-02 18:40:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:09,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 703 proven. 1332 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:40:09,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:09,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943505405] [2021-05-02 18:40:09,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943505405] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:09,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495030164] [2021-05-02 18:40:09,861 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 [2021-05-02 18:40:09,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 18:40:09,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:09,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:40:09,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:10,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 756 proven. 100 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2021-05-02 18:40:10,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495030164] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:10,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:10,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13] total 51 [2021-05-02 18:40:10,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951635549] [2021-05-02 18:40:10,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:40:10,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:10,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:40:10,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:40:10,439 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) [2021-05-02 18:40:12,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:12,918 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-05-02 18:40:12,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:40:12,918 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 [2021-05-02 18:40:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:12,919 INFO L225 Difference]: With dead ends: 111 [2021-05-02 18:40:12,919 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 18:40:12,920 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 3141.1ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:40:12,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 18:40:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-02 18:40:12,922 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) [2021-05-02 18:40:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-05-02 18:40:12,923 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 105 [2021-05-02 18:40:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:12,923 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-05-02 18:40:12,923 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) [2021-05-02 18:40:12,923 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-05-02 18:40:12,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 18:40:12,924 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:12,924 INFO L523 BasicCegarLoop]: trace histogram [48, 37, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:13,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 18:40:13,142 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:13,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:13,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1691932512, now seen corresponding path program 34 times [2021-05-02 18:40:13,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:13,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828545228] [2021-05-02 18:40:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:13,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:40:13,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:13,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828545228] [2021-05-02 18:40:13,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828545228] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:13,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333127378] [2021-05-02 18:40:13,866 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 [2021-05-02 18:40:13,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:40:13,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 18:40:13,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:13,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:13,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:40:14,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333127378] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:14,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:14,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 18:40:14,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828904008] [2021-05-02 18:40:14,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 18:40:14,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:14,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 18:40:14,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:40:14,116 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) [2021-05-02 18:40:15,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:15,872 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-05-02 18:40:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 18:40:15,873 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 [2021-05-02 18:40:15,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:15,874 INFO L225 Difference]: With dead ends: 112 [2021-05-02 18:40:15,874 INFO L226 Difference]: Without dead ends: 112 [2021-05-02 18:40:15,874 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 2188.3ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:40:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-02 18:40:15,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-05-02 18:40:15,876 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) [2021-05-02 18:40:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2021-05-02 18:40:15,876 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 109 [2021-05-02 18:40:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:15,876 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-05-02 18:40:15,876 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) [2021-05-02 18:40:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2021-05-02 18:40:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 18:40:15,877 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:15,877 INFO L523 BasicCegarLoop]: trace histogram [49, 38, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:16,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 18:40:16,093 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:16,093 INFO L82 PathProgramCache]: Analyzing trace with hash 758251004, now seen corresponding path program 35 times [2021-05-02 18:40:16,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:16,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594175420] [2021-05-02 18:40:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:16,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:40:16,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:16,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594175420] [2021-05-02 18:40:16,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594175420] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:16,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497784497] [2021-05-02 18:40:16,794 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 [2021-05-02 18:40:16,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-05-02 18:40:16,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:16,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 18:40:16,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:16,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:16,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:40:17,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497784497] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:17,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:17,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-02 18:40:17,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866146562] [2021-05-02 18:40:17,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:40:17,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:17,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:40:17,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:40:17,057 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) [2021-05-02 18:40:18,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:18,702 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2021-05-02 18:40:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 18:40:18,702 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 [2021-05-02 18:40:18,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:18,703 INFO L225 Difference]: With dead ends: 114 [2021-05-02 18:40:18,703 INFO L226 Difference]: Without dead ends: 114 [2021-05-02 18:40:18,703 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 2179.1ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:40:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-02 18:40:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-05-02 18:40:18,705 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) [2021-05-02 18:40:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2021-05-02 18:40:18,705 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 111 [2021-05-02 18:40:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:18,706 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2021-05-02 18:40:18,706 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) [2021-05-02 18:40:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2021-05-02 18:40:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 18:40:18,706 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:18,706 INFO L523 BasicCegarLoop]: trace histogram [50, 39, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:18,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 18:40:18,923 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:18,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:18,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1742531672, now seen corresponding path program 36 times [2021-05-02 18:40:18,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:18,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472121232] [2021-05-02 18:40:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:19,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 840 proven. 1560 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:40:19,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:19,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472121232] [2021-05-02 18:40:19,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472121232] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:19,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532754344] [2021-05-02 18:40:19,687 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 [2021-05-02 18:40:19,780 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-02 18:40:19,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:19,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:40:19,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:19,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:19,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:19,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:19,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:19,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:19,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:19,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:19,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 897 proven. 121 refuted. 0 times theorem prover too weak. 1483 trivial. 0 not checked. [2021-05-02 18:40:20,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532754344] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:20,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:20,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 14] total 55 [2021-05-02 18:40:20,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548996503] [2021-05-02 18:40:20,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:40:20,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:20,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:40:20,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:40:20,353 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) [2021-05-02 18:40:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:23,222 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2021-05-02 18:40:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 18:40:23,222 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 [2021-05-02 18:40:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:23,223 INFO L225 Difference]: With dead ends: 119 [2021-05-02 18:40:23,223 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 18:40:23,224 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 3719.5ms TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:40:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 18:40:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-02 18:40:23,226 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) [2021-05-02 18:40:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2021-05-02 18:40:23,227 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 113 [2021-05-02 18:40:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:23,227 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2021-05-02 18:40:23,227 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) [2021-05-02 18:40:23,227 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2021-05-02 18:40:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 18:40:23,228 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:23,228 INFO L523 BasicCegarLoop]: trace histogram [52, 40, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:23,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-05-02 18:40:23,450 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:23,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:23,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1731805265, now seen corresponding path program 37 times [2021-05-02 18:40:23,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:23,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028730691] [2021-05-02 18:40:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:24,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:40:24,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:24,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028730691] [2021-05-02 18:40:24,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028730691] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:24,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116666438] [2021-05-02 18:40:24,234 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 [2021-05-02 18:40:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:24,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 18:40:24,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:24,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:40:24,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116666438] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:24,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:24,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-02 18:40:24,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868228543] [2021-05-02 18:40:24,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 18:40:24,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:24,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 18:40:24,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 18:40:24,494 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) [2021-05-02 18:40:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:26,422 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-05-02 18:40:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 18:40:26,422 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 [2021-05-02 18:40:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:26,423 INFO L225 Difference]: With dead ends: 120 [2021-05-02 18:40:26,423 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 18:40:26,424 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 2443.3ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:40:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 18:40:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 18:40:26,426 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) [2021-05-02 18:40:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2021-05-02 18:40:26,427 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 117 [2021-05-02 18:40:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:26,427 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2021-05-02 18:40:26,427 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) [2021-05-02 18:40:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2021-05-02 18:40:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 18:40:26,428 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:26,428 INFO L523 BasicCegarLoop]: trace histogram [53, 41, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:26,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:40:26,644 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:26,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1178306293, now seen corresponding path program 38 times [2021-05-02 18:40:26,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:26,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892531088] [2021-05-02 18:40:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:27,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:40:27,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:27,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892531088] [2021-05-02 18:40:27,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892531088] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:27,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706609791] [2021-05-02 18:40:27,542 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 [2021-05-02 18:40:27,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:40:27,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:27,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 18:40:27,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:27,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:40:27,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706609791] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:27,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:27,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 18:40:27,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388623941] [2021-05-02 18:40:27,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 18:40:27,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:27,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 18:40:27,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:40:27,811 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) [2021-05-02 18:40:29,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:29,837 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2021-05-02 18:40:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 18:40:29,837 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 [2021-05-02 18:40:29,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:29,838 INFO L225 Difference]: With dead ends: 122 [2021-05-02 18:40:29,838 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 18:40:29,839 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2578.8ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:40:29,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 18:40:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-05-02 18:40:29,841 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) [2021-05-02 18:40:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2021-05-02 18:40:29,841 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 119 [2021-05-02 18:40:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:29,841 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2021-05-02 18:40:29,841 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) [2021-05-02 18:40:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2021-05-02 18:40:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 18:40:29,842 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:29,842 INFO L523 BasicCegarLoop]: trace histogram [54, 42, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:30,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:40:30,060 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:30,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:30,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1841738905, now seen corresponding path program 39 times [2021-05-02 18:40:30,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:30,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849920216] [2021-05-02 18:40:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:31,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 989 proven. 1806 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:40:31,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:31,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849920216] [2021-05-02 18:40:31,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849920216] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:31,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711758713] [2021-05-02 18:40:31,021 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 [2021-05-02 18:40:31,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-02 18:40:31,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:31,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:40:31,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:31,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 1050 proven. 144 refuted. 0 times theorem prover too weak. 1723 trivial. 0 not checked. [2021-05-02 18:40:31,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711758713] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:31,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:31,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 15] total 59 [2021-05-02 18:40:31,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908425534] [2021-05-02 18:40:31,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 18:40:31,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:31,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 18:40:31,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:40:31,742 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) [2021-05-02 18:40:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:34,790 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2021-05-02 18:40:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:40:34,791 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 [2021-05-02 18:40:34,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:34,792 INFO L225 Difference]: With dead ends: 127 [2021-05-02 18:40:34,792 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 18:40:34,792 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 4158.2ms TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:40:34,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 18:40:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-02 18:40:34,794 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) [2021-05-02 18:40:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-05-02 18:40:34,795 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 121 [2021-05-02 18:40:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:34,795 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-05-02 18:40:34,795 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) [2021-05-02 18:40:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-05-02 18:40:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 18:40:34,796 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:34,796 INFO L523 BasicCegarLoop]: trace histogram [56, 43, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:35,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:40:35,011 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:35,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1145079042, now seen corresponding path program 40 times [2021-05-02 18:40:35,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:35,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562924197] [2021-05-02 18:40:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:40:35,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:35,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562924197] [2021-05-02 18:40:35,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562924197] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:35,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207336968] [2021-05-02 18:40:35,940 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 [2021-05-02 18:40:36,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:40:36,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:36,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 18:40:36,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:36,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:40:36,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207336968] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:36,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:36,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 18:40:36,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482106514] [2021-05-02 18:40:36,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 18:40:36,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:36,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 18:40:36,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:40:36,218 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) [2021-05-02 18:40:38,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:38,470 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-05-02 18:40:38,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:40:38,471 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 [2021-05-02 18:40:38,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:38,471 INFO L225 Difference]: With dead ends: 128 [2021-05-02 18:40:38,471 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 18:40:38,472 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2867.5ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:40:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 18:40:38,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-02 18:40:38,473 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) [2021-05-02 18:40:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2021-05-02 18:40:38,474 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 125 [2021-05-02 18:40:38,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:38,474 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2021-05-02 18:40:38,474 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) [2021-05-02 18:40:38,474 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2021-05-02 18:40:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 18:40:38,474 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:38,474 INFO L523 BasicCegarLoop]: trace histogram [57, 44, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:38,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 18:40:38,690 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:38,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:38,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1284249690, now seen corresponding path program 41 times [2021-05-02 18:40:38,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:38,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841017682] [2021-05-02 18:40:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:39,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:40:39,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:39,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841017682] [2021-05-02 18:40:39,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841017682] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:39,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634490246] [2021-05-02 18:40:39,595 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 [2021-05-02 18:40:39,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-05-02 18:40:39,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:39,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 18:40:39,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:39,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:40:39,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634490246] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:39,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:39,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-02 18:40:39,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439749203] [2021-05-02 18:40:39,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 18:40:39,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:39,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 18:40:39,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 18:40:39,852 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) [2021-05-02 18:40:41,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:41,992 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2021-05-02 18:40:41,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 18:40:41,992 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 [2021-05-02 18:40:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:41,993 INFO L225 Difference]: With dead ends: 130 [2021-05-02 18:40:41,993 INFO L226 Difference]: Without dead ends: 130 [2021-05-02 18:40:41,993 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2761.5ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:40:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-02 18:40:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-05-02 18:40:41,995 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) [2021-05-02 18:40:41,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2021-05-02 18:40:41,995 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 127 [2021-05-02 18:40:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:41,995 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2021-05-02 18:40:41,996 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) [2021-05-02 18:40:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2021-05-02 18:40:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 18:40:42,004 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:42,004 INFO L523 BasicCegarLoop]: trace histogram [58, 45, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:42,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:40:42,221 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:42,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:42,222 INFO L82 PathProgramCache]: Analyzing trace with hash -593047882, now seen corresponding path program 42 times [2021-05-02 18:40:42,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:42,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016966063] [2021-05-02 18:40:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3365 backedges. 1150 proven. 2070 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:40:43,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:43,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016966063] [2021-05-02 18:40:43,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016966063] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:43,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14323709] [2021-05-02 18:40:43,254 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 [2021-05-02 18:40:43,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 18:40:43,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:43,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:40:43,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:43,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:43,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:44,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:44,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:44,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:44,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3365 backedges. 1215 proven. 169 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2021-05-02 18:40:44,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14323709] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:44,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:44,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16] total 63 [2021-05-02 18:40:44,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641234390] [2021-05-02 18:40:44,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:40:44,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:44,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:40:44,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:40:44,143 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) [2021-05-02 18:40:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:47,859 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2021-05-02 18:40:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:40:47,859 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 [2021-05-02 18:40:47,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:47,860 INFO L225 Difference]: With dead ends: 135 [2021-05-02 18:40:47,860 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 18:40:47,861 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 4947.5ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:40:47,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 18:40:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-02 18:40:47,864 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) [2021-05-02 18:40:47,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-05-02 18:40:47,864 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 129 [2021-05-02 18:40:47,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:47,865 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-05-02 18:40:47,865 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) [2021-05-02 18:40:47,865 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-05-02 18:40:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 18:40:47,866 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:47,866 INFO L523 BasicCegarLoop]: trace histogram [60, 46, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:48,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:40:48,089 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:48,089 INFO L82 PathProgramCache]: Analyzing trace with hash 183323277, now seen corresponding path program 43 times [2021-05-02 18:40:48,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:48,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322652423] [2021-05-02 18:40:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:49,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:40:49,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:49,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322652423] [2021-05-02 18:40:49,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322652423] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:49,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488610386] [2021-05-02 18:40:49,144 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 [2021-05-02 18:40:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:49,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 18:40:49,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:49,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:40:49,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488610386] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:49,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:49,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-02 18:40:49,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146773175] [2021-05-02 18:40:49,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:40:49,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:49,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:40:49,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:40:49,443 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) [2021-05-02 18:40:51,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:51,720 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-05-02 18:40:51,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 18:40:51,721 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 [2021-05-02 18:40:51,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:51,722 INFO L225 Difference]: With dead ends: 136 [2021-05-02 18:40:51,722 INFO L226 Difference]: Without dead ends: 136 [2021-05-02 18:40:51,723 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 3107.7ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:40:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-02 18:40:51,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-05-02 18:40:51,725 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) [2021-05-02 18:40:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2021-05-02 18:40:51,726 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 133 [2021-05-02 18:40:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:51,726 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2021-05-02 18:40:51,726 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) [2021-05-02 18:40:51,726 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2021-05-02 18:40:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 18:40:51,727 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:51,727 INFO L523 BasicCegarLoop]: trace histogram [61, 47, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:51,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 18:40:51,946 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:51,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:51,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1348783081, now seen corresponding path program 44 times [2021-05-02 18:40:51,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:51,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946161960] [2021-05-02 18:40:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:40:53,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:53,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946161960] [2021-05-02 18:40:53,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946161960] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:53,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407968295] [2021-05-02 18:40:53,061 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 [2021-05-02 18:40:53,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:40:53,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:53,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:40:53,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:53,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:40:53,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407968295] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:53,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:53,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 18:40:53,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450450830] [2021-05-02 18:40:53,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 18:40:53,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:53,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 18:40:53,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:40:53,350 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) [2021-05-02 18:40:55,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:40:55,781 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2021-05-02 18:40:55,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:40:55,781 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 [2021-05-02 18:40:55,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:40:55,782 INFO L225 Difference]: With dead ends: 138 [2021-05-02 18:40:55,782 INFO L226 Difference]: Without dead ends: 138 [2021-05-02 18:40:55,782 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 3196.5ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:40:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-05-02 18:40:55,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-05-02 18:40:55,784 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) [2021-05-02 18:40:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2021-05-02 18:40:55,784 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 135 [2021-05-02 18:40:55,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:40:55,784 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2021-05-02 18:40:55,785 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) [2021-05-02 18:40:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2021-05-02 18:40:55,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 18:40:55,785 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:40:55,785 INFO L523 BasicCegarLoop]: trace histogram [62, 48, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:40:56,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 18:40:56,009 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:40:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:40:56,009 INFO L82 PathProgramCache]: Analyzing trace with hash 369190469, now seen corresponding path program 45 times [2021-05-02 18:40:56,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:40:56,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959077037] [2021-05-02 18:40:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:40:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:57,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:40:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:40:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 1323 proven. 2352 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:40:57,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:40:57,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959077037] [2021-05-02 18:40:57,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959077037] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:57,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772578429] [2021-05-02 18:40:57,270 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 [2021-05-02 18:40:57,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-02 18:40:57,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:40:57,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 18:40:57,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:40:57,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:57,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:40:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 1392 proven. 196 refuted. 0 times theorem prover too weak. 2257 trivial. 0 not checked. [2021-05-02 18:40:58,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772578429] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:40:58,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:40:58,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 17] total 67 [2021-05-02 18:40:58,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640968218] [2021-05-02 18:40:58,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:40:58,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:40:58,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:40:58,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:40:58,276 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) [2021-05-02 18:41:01,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:01,464 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2021-05-02 18:41:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 18:41:01,465 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 [2021-05-02 18:41:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:01,465 INFO L225 Difference]: With dead ends: 143 [2021-05-02 18:41:01,465 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 18:41:01,466 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 4816.6ms TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 18:41:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 18:41:01,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-02 18:41:01,467 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) [2021-05-02 18:41:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-05-02 18:41:01,468 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 137 [2021-05-02 18:41:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:01,468 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-05-02 18:41:01,468 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) [2021-05-02 18:41:01,468 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-05-02 18:41:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 18:41:01,469 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:01,469 INFO L523 BasicCegarLoop]: trace histogram [64, 49, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:01,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 18:41:01,669 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:01,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1911561820, now seen corresponding path program 46 times [2021-05-02 18:41:01,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:01,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390960802] [2021-05-02 18:41:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:02,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:41:02,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:02,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390960802] [2021-05-02 18:41:02,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390960802] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:02,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402667396] [2021-05-02 18:41:02,831 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 [2021-05-02 18:41:02,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:41:02,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:41:02,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 18:41:02,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:02,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:02,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:41:03,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402667396] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:03,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:03,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 18:41:03,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181481737] [2021-05-02 18:41:03,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 18:41:03,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:03,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 18:41:03,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:41:03,102 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) [2021-05-02 18:41:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:05,806 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2021-05-02 18:41:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:41:05,807 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 [2021-05-02 18:41:05,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:05,808 INFO L225 Difference]: With dead ends: 144 [2021-05-02 18:41:05,808 INFO L226 Difference]: Without dead ends: 144 [2021-05-02 18:41:05,808 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 3493.9ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:41:05,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-02 18:41:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-05-02 18:41:05,810 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) [2021-05-02 18:41:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2021-05-02 18:41:05,811 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 141 [2021-05-02 18:41:05,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:05,811 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2021-05-02 18:41:05,811 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) [2021-05-02 18:41:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2021-05-02 18:41:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:41:05,811 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:05,812 INFO L523 BasicCegarLoop]: trace histogram [65, 50, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:06,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:41:06,028 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:06,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:06,028 INFO L82 PathProgramCache]: Analyzing trace with hash 351175608, now seen corresponding path program 47 times [2021-05-02 18:41:06,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:06,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386092638] [2021-05-02 18:41:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:07,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:41:07,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:07,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386092638] [2021-05-02 18:41:07,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386092638] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:07,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362884145] [2021-05-02 18:41:07,259 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 [2021-05-02 18:41:07,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-02 18:41:07,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:41:07,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 18:41:07,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:07,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:41:07,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362884145] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:07,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:07,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-02 18:41:07,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792489195] [2021-05-02 18:41:07,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:41:07,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:07,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:41:07,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:41:07,559 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) [2021-05-02 18:41:10,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:10,059 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2021-05-02 18:41:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 18:41:10,059 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 [2021-05-02 18:41:10,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:10,060 INFO L225 Difference]: With dead ends: 146 [2021-05-02 18:41:10,060 INFO L226 Difference]: Without dead ends: 146 [2021-05-02 18:41:10,060 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 3380.4ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:41:10,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-02 18:41:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-02 18:41:10,062 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) [2021-05-02 18:41:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2021-05-02 18:41:10,062 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 143 [2021-05-02 18:41:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:10,062 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2021-05-02 18:41:10,063 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) [2021-05-02 18:41:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2021-05-02 18:41:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 18:41:10,063 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:10,063 INFO L523 BasicCegarLoop]: trace histogram [66, 51, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:10,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:41:10,279 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash -236387820, now seen corresponding path program 48 times [2021-05-02 18:41:10,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:10,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062751145] [2021-05-02 18:41:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4357 backedges. 1508 proven. 2652 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:41:11,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:11,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062751145] [2021-05-02 18:41:11,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062751145] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:11,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541786511] [2021-05-02 18:41:11,542 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 [2021-05-02 18:41:11,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-02 18:41:11,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:41:11,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:41:11,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:11,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:11,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:11,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:11,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:11,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:11,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:11,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:11,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4357 backedges. 1581 proven. 225 refuted. 0 times theorem prover too weak. 2551 trivial. 0 not checked. [2021-05-02 18:41:12,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541786511] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:12,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:12,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 18] total 71 [2021-05-02 18:41:12,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766089226] [2021-05-02 18:41:12,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 18:41:12,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:12,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 18:41:12,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:41:12,683 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) [2021-05-02 18:41:16,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:16,533 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-05-02 18:41:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:41:16,533 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 [2021-05-02 18:41:16,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:16,534 INFO L225 Difference]: With dead ends: 151 [2021-05-02 18:41:16,534 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 18:41:16,535 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 5537.2ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 18:41:16,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 18:41:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-02 18:41:16,537 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) [2021-05-02 18:41:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2021-05-02 18:41:16,537 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 145 [2021-05-02 18:41:16,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:16,537 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2021-05-02 18:41:16,537 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) [2021-05-02 18:41:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2021-05-02 18:41:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 18:41:16,538 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:16,538 INFO L523 BasicCegarLoop]: trace histogram [68, 52, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:16,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-02 18:41:16,754 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:16,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1607735701, now seen corresponding path program 49 times [2021-05-02 18:41:16,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:16,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993224946] [2021-05-02 18:41:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:41:18,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:18,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993224946] [2021-05-02 18:41:18,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993224946] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:18,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271839710] [2021-05-02 18:41:18,032 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 [2021-05-02 18:41:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:18,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 18:41:18,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:18,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:41:18,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271839710] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:18,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:18,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-02 18:41:18,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377371527] [2021-05-02 18:41:18,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 18:41:18,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:18,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 18:41:18,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 18:41:18,384 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) [2021-05-02 18:41:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:21,145 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2021-05-02 18:41:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 18:41:21,145 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 [2021-05-02 18:41:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:21,146 INFO L225 Difference]: With dead ends: 152 [2021-05-02 18:41:21,146 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 18:41:21,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 3761.3ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:41:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 18:41:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-05-02 18:41:21,148 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) [2021-05-02 18:41:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2021-05-02 18:41:21,149 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 149 [2021-05-02 18:41:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:21,149 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2021-05-02 18:41:21,149 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) [2021-05-02 18:41:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2021-05-02 18:41:21,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 18:41:21,149 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:21,150 INFO L523 BasicCegarLoop]: trace histogram [69, 53, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:21,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:41:21,361 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:21,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:21,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1383256121, now seen corresponding path program 50 times [2021-05-02 18:41:21,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:21,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829202340] [2021-05-02 18:41:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:41:22,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:22,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829202340] [2021-05-02 18:41:22,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829202340] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:22,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702645300] [2021-05-02 18:41:22,788 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 [2021-05-02 18:41:22,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:41:22,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:41:22,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 18:41:22,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:22,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:22,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:41:23,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702645300] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:23,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:23,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 18:41:23,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103423976] [2021-05-02 18:41:23,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 18:41:23,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:23,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 18:41:23,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:41:23,086 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) [2021-05-02 18:41:25,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:25,863 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2021-05-02 18:41:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 18:41:25,864 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 [2021-05-02 18:41:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:25,865 INFO L225 Difference]: With dead ends: 154 [2021-05-02 18:41:25,865 INFO L226 Difference]: Without dead ends: 154 [2021-05-02 18:41:25,865 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3883.5ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:41:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-02 18:41:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-05-02 18:41:25,866 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) [2021-05-02 18:41:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2021-05-02 18:41:25,867 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 151 [2021-05-02 18:41:25,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:25,867 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2021-05-02 18:41:25,867 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) [2021-05-02 18:41:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2021-05-02 18:41:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 18:41:25,868 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:25,868 INFO L523 BasicCegarLoop]: trace histogram [70, 54, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:26,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 18:41:26,077 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:26,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:26,077 INFO L82 PathProgramCache]: Analyzing trace with hash -406744541, now seen corresponding path program 51 times [2021-05-02 18:41:26,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:26,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402360607] [2021-05-02 18:41:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:27,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1705 proven. 2970 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:41:27,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:27,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402360607] [2021-05-02 18:41:27,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402360607] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:27,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120367419] [2021-05-02 18:41:27,469 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 [2021-05-02 18:41:27,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 18:41:27,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:41:27,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:41:27,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:27,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:27,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1782 proven. 256 refuted. 0 times theorem prover too weak. 2863 trivial. 0 not checked. [2021-05-02 18:41:28,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120367419] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:28,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:28,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 19] total 75 [2021-05-02 18:41:28,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429643770] [2021-05-02 18:41:28,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:41:28,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:28,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:41:28,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:41:28,752 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) [2021-05-02 18:41:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:32,930 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2021-05-02 18:41:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:41:32,930 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 [2021-05-02 18:41:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:32,931 INFO L225 Difference]: With dead ends: 159 [2021-05-02 18:41:32,931 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 18:41:32,932 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 6155.7ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 18:41:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 18:41:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-02 18:41:32,933 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) [2021-05-02 18:41:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2021-05-02 18:41:32,934 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 153 [2021-05-02 18:41:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:32,934 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2021-05-02 18:41:32,934 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) [2021-05-02 18:41:32,934 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2021-05-02 18:41:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 18:41:32,934 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:32,934 INFO L523 BasicCegarLoop]: trace histogram [72, 55, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:33,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-02 18:41:33,145 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:33,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:33,145 INFO L82 PathProgramCache]: Analyzing trace with hash 667456186, now seen corresponding path program 52 times [2021-05-02 18:41:33,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:33,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358908053] [2021-05-02 18:41:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:41:34,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:34,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358908053] [2021-05-02 18:41:34,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358908053] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:34,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237833259] [2021-05-02 18:41:34,635 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 [2021-05-02 18:41:34,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:41:34,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:41:34,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 18:41:34,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:34,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:41:34,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237833259] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:34,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:34,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-02 18:41:34,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313469032] [2021-05-02 18:41:34,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 18:41:34,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:34,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 18:41:34,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:41:34,949 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) [2021-05-02 18:41:38,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:38,211 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-05-02 18:41:38,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:41:38,212 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 [2021-05-02 18:41:38,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:38,212 INFO L225 Difference]: With dead ends: 160 [2021-05-02 18:41:38,212 INFO L226 Difference]: Without dead ends: 160 [2021-05-02 18:41:38,213 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 4331.0ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 18:41:38,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-02 18:41:38,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-05-02 18:41:38,215 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) [2021-05-02 18:41:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 178 transitions. [2021-05-02 18:41:38,216 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 178 transitions. Word has length 157 [2021-05-02 18:41:38,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:38,216 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 178 transitions. [2021-05-02 18:41:38,216 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) [2021-05-02 18:41:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 178 transitions. [2021-05-02 18:41:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 18:41:38,217 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:38,217 INFO L523 BasicCegarLoop]: trace histogram [73, 56, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:38,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 18:41:38,422 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:38,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:38,422 INFO L82 PathProgramCache]: Analyzing trace with hash 275300374, now seen corresponding path program 53 times [2021-05-02 18:41:38,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:38,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948995849] [2021-05-02 18:41:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:39,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5330 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:41:39,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:39,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948995849] [2021-05-02 18:41:39,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948995849] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:39,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833839306] [2021-05-02 18:41:39,917 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 [2021-05-02 18:41:40,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2021-05-02 18:41:40,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:41:40,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 18:41:40,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:40,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5330 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:41:40,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833839306] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:40,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:40,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-02 18:41:40,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264121899] [2021-05-02 18:41:40,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 18:41:40,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:40,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 18:41:40,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 18:41:40,247 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) [2021-05-02 18:41:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:43,128 INFO L93 Difference]: Finished difference Result 162 states and 180 transitions. [2021-05-02 18:41:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 18:41:43,128 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 [2021-05-02 18:41:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:43,129 INFO L225 Difference]: With dead ends: 162 [2021-05-02 18:41:43,129 INFO L226 Difference]: Without dead ends: 162 [2021-05-02 18:41:43,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3976.5ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 18:41:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-02 18:41:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-05-02 18:41:43,131 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) [2021-05-02 18:41:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2021-05-02 18:41:43,131 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 159 [2021-05-02 18:41:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:43,132 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2021-05-02 18:41:43,132 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) [2021-05-02 18:41:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2021-05-02 18:41:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 18:41:43,132 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:43,132 INFO L523 BasicCegarLoop]: trace histogram [74, 57, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:43,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-02 18:41:43,345 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:43,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:43,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1370687090, now seen corresponding path program 54 times [2021-05-02 18:41:43,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:43,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585779603] [2021-05-02 18:41:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 1914 proven. 3306 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:41:44,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:44,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585779603] [2021-05-02 18:41:44,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585779603] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:44,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981931024] [2021-05-02 18:41:44,883 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 [2021-05-02 18:41:44,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-02 18:41:44,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:41:44,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 18:41:45,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:45,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:45,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:46,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:46,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:46,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:46,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:46,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 1995 proven. 289 refuted. 0 times theorem prover too weak. 3193 trivial. 0 not checked. [2021-05-02 18:41:46,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981931024] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:46,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:46,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 20] total 79 [2021-05-02 18:41:46,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580753249] [2021-05-02 18:41:46,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:41:46,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:46,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:41:46,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:41:46,265 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) [2021-05-02 18:41:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:50,569 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2021-05-02 18:41:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 18:41:50,570 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 [2021-05-02 18:41:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:50,575 INFO L225 Difference]: With dead ends: 167 [2021-05-02 18:41:50,575 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 18:41:50,576 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 6443.8ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-02 18:41:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 18:41:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-02 18:41:50,577 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) [2021-05-02 18:41:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2021-05-02 18:41:50,578 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 161 [2021-05-02 18:41:50,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:50,578 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2021-05-02 18:41:50,578 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) [2021-05-02 18:41:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2021-05-02 18:41:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 18:41:50,578 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:50,578 INFO L523 BasicCegarLoop]: trace histogram [76, 58, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:50,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:41:50,799 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash -592309431, now seen corresponding path program 55 times [2021-05-02 18:41:50,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:50,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840407045] [2021-05-02 18:41:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:52,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:41:52,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:52,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840407045] [2021-05-02 18:41:52,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840407045] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:52,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190550294] [2021-05-02 18:41:52,151 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 [2021-05-02 18:41:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:52,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 18:41:52,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:52,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:41:52,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190550294] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:52,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:52,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-02 18:41:52,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718597751] [2021-05-02 18:41:52,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:41:52,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:52,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:41:52,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:41:52,472 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) [2021-05-02 18:41:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:41:55,518 INFO L93 Difference]: Finished difference Result 168 states and 187 transitions. [2021-05-02 18:41:55,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 18:41:55,519 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 [2021-05-02 18:41:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:41:55,520 INFO L225 Difference]: With dead ends: 168 [2021-05-02 18:41:55,520 INFO L226 Difference]: Without dead ends: 168 [2021-05-02 18:41:55,520 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3963.8ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 18:41:55,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-02 18:41:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-05-02 18:41:55,522 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) [2021-05-02 18:41:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2021-05-02 18:41:55,522 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 165 [2021-05-02 18:41:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:41:55,522 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2021-05-02 18:41:55,522 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) [2021-05-02 18:41:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2021-05-02 18:41:55,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 18:41:55,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:41:55,523 INFO L523 BasicCegarLoop]: trace histogram [77, 59, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:41:55,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 18:41:55,724 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:41:55,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:41:55,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1970087077, now seen corresponding path program 56 times [2021-05-02 18:41:55,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:41:55,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194171436] [2021-05-02 18:41:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:41:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:41:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:41:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5930 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:41:57,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:41:57,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194171436] [2021-05-02 18:41:57,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194171436] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:57,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120215454] [2021-05-02 18:41:57,390 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 [2021-05-02 18:41:57,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:41:57,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:41:57,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 18:41:57,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:41:57,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:41:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5930 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:41:57,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120215454] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:41:57,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:41:57,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 18:41:57,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337834687] [2021-05-02 18:41:57,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 18:41:57,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:41:57,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 18:41:57,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:41:57,727 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) [2021-05-02 18:42:00,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:42:00,815 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2021-05-02 18:42:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:42:00,815 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 [2021-05-02 18:42:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:42:00,816 INFO L225 Difference]: With dead ends: 170 [2021-05-02 18:42:00,816 INFO L226 Difference]: Without dead ends: 170 [2021-05-02 18:42:00,816 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 4366.6ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 18:42:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-02 18:42:00,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-05-02 18:42:00,818 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) [2021-05-02 18:42:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 189 transitions. [2021-05-02 18:42:00,818 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 189 transitions. Word has length 167 [2021-05-02 18:42:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:42:00,818 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 189 transitions. [2021-05-02 18:42:00,818 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) [2021-05-02 18:42:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 189 transitions. [2021-05-02 18:42:00,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 18:42:00,819 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:42:00,819 INFO L523 BasicCegarLoop]: trace histogram [78, 60, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:42:01,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:42:01,029 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:42:01,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:42:01,029 INFO L82 PathProgramCache]: Analyzing trace with hash -878096639, now seen corresponding path program 57 times [2021-05-02 18:42:01,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:42:01,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584229323] [2021-05-02 18:42:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:42:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:02,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:42:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6085 backedges. 2135 proven. 3660 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:42:02,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:42:02,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584229323] [2021-05-02 18:42:02,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584229323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:02,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466731157] [2021-05-02 18:42:02,708 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 [2021-05-02 18:42:02,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-02 18:42:02,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:42:02,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:42:02,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:42:02,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:02,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:03,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:04,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:04,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:04,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:04,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6085 backedges. 2220 proven. 324 refuted. 0 times theorem prover too weak. 3541 trivial. 0 not checked. [2021-05-02 18:42:04,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466731157] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:04,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:42:04,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 21] total 83 [2021-05-02 18:42:04,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357929896] [2021-05-02 18:42:04,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 18:42:04,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:42:04,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 18:42:04,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:42:04,194 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) [2021-05-02 18:42:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:42:09,367 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2021-05-02 18:42:09,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:42:09,367 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 [2021-05-02 18:42:09,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:42:09,368 INFO L225 Difference]: With dead ends: 175 [2021-05-02 18:42:09,368 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 18:42:09,369 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 7506.3ms TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2021-05-02 18:42:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 18:42:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-02 18:42:09,370 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) [2021-05-02 18:42:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-05-02 18:42:09,370 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 169 [2021-05-02 18:42:09,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:42:09,370 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-05-02 18:42:09,371 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) [2021-05-02 18:42:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-05-02 18:42:09,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 18:42:09,371 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:42:09,371 INFO L523 BasicCegarLoop]: trace histogram [80, 61, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:42:09,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-02 18:42:09,585 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:42:09,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:42:09,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1939363864, now seen corresponding path program 58 times [2021-05-02 18:42:09,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:42:09,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442485614] [2021-05-02 18:42:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:42:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:11,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:42:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6401 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:42:11,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:42:11,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442485614] [2021-05-02 18:42:11,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442485614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:11,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382529327] [2021-05-02 18:42:11,365 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 [2021-05-02 18:42:11,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:42:11,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:42:11,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 18:42:11,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:42:11,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6401 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:42:11,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382529327] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:11,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:42:11,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 18:42:11,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556822501] [2021-05-02 18:42:11,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 18:42:11,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:42:11,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 18:42:11,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:42:11,725 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) [2021-05-02 18:42:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:42:15,116 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2021-05-02 18:42:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 18:42:15,116 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 [2021-05-02 18:42:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:42:15,117 INFO L225 Difference]: With dead ends: 176 [2021-05-02 18:42:15,117 INFO L226 Difference]: Without dead ends: 176 [2021-05-02 18:42:15,118 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 4744.5ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 18:42:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-02 18:42:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-02 18:42:15,119 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) [2021-05-02 18:42:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2021-05-02 18:42:15,120 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 173 [2021-05-02 18:42:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:42:15,120 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2021-05-02 18:42:15,120 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) [2021-05-02 18:42:15,120 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2021-05-02 18:42:15,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 18:42:15,121 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:42:15,121 INFO L523 BasicCegarLoop]: trace histogram [81, 62, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:42:15,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:42:15,333 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:42:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:42:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash -179679884, now seen corresponding path program 59 times [2021-05-02 18:42:15,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:42:15,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005668799] [2021-05-02 18:42:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:42:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:17,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:42:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:42:17,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:42:17,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005668799] [2021-05-02 18:42:17,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005668799] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:17,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601083191] [2021-05-02 18:42:17,203 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 [2021-05-02 18:42:17,302 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2021-05-02 18:42:17,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:42:17,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 18:42:17,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:42:17,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:42:17,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601083191] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:17,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:42:17,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-02 18:42:17,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670945529] [2021-05-02 18:42:17,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:42:17,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:42:17,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:42:17,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:42:17,578 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) [2021-05-02 18:42:21,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:42:21,024 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2021-05-02 18:42:21,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 18:42:21,024 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 [2021-05-02 18:42:21,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:42:21,025 INFO L225 Difference]: With dead ends: 178 [2021-05-02 18:42:21,025 INFO L226 Difference]: Without dead ends: 178 [2021-05-02 18:42:21,026 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4858.6ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 18:42:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-05-02 18:42:21,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-05-02 18:42:21,027 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) [2021-05-02 18:42:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2021-05-02 18:42:21,027 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 175 [2021-05-02 18:42:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:42:21,028 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2021-05-02 18:42:21,028 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) [2021-05-02 18:42:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2021-05-02 18:42:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 18:42:21,028 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:42:21,028 INFO L523 BasicCegarLoop]: trace histogram [82, 63, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:42:21,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-02 18:42:21,229 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:42:21,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:42:21,229 INFO L82 PathProgramCache]: Analyzing trace with hash -766223408, now seen corresponding path program 60 times [2021-05-02 18:42:21,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:42:21,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351446163] [2021-05-02 18:42:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:42:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:42:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6725 backedges. 2368 proven. 4032 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:42:23,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:42:23,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351446163] [2021-05-02 18:42:23,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351446163] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:23,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757220275] [2021-05-02 18:42:23,232 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 [2021-05-02 18:42:23,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 18:42:23,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:42:23,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:42:23,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:42:23,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:23,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6725 backedges. 2457 proven. 361 refuted. 0 times theorem prover too weak. 3907 trivial. 0 not checked. [2021-05-02 18:42:24,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757220275] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:24,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:42:24,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 22] total 87 [2021-05-02 18:42:24,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935478799] [2021-05-02 18:42:24,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:42:24,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:42:24,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:42:24,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:42:24,964 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) [2021-05-02 18:42:30,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:42:30,338 INFO L93 Difference]: Finished difference Result 183 states and 205 transitions. [2021-05-02 18:42:30,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:42:30,338 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 [2021-05-02 18:42:30,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:42:30,339 INFO L225 Difference]: With dead ends: 183 [2021-05-02 18:42:30,339 INFO L226 Difference]: Without dead ends: 183 [2021-05-02 18:42:30,340 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 8176.2ms TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2021-05-02 18:42:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-02 18:42:30,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-02 18:42:30,342 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) [2021-05-02 18:42:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2021-05-02 18:42:30,342 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 177 [2021-05-02 18:42:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:42:30,342 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2021-05-02 18:42:30,342 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) [2021-05-02 18:42:30,342 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2021-05-02 18:42:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 18:42:30,343 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:42:30,343 INFO L523 BasicCegarLoop]: trace histogram [84, 64, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:42:30,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:42:30,553 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:42:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:42:30,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1626296615, now seen corresponding path program 61 times [2021-05-02 18:42:30,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:42:30,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853691743] [2021-05-02 18:42:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:42:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:32,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:42:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:32,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:42:32,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:42:32,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853691743] [2021-05-02 18:42:32,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853691743] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:32,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089563421] [2021-05-02 18:42:32,345 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 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 [2021-05-02 18:42:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:32,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 18:42:32,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:42:32,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:42:32,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089563421] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:32,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:42:32,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-02 18:42:32,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173282621] [2021-05-02 18:42:32,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 18:42:32,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:42:32,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 18:42:32,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 18:42:32,790 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) [2021-05-02 18:42:36,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:42:36,277 INFO L93 Difference]: Finished difference Result 184 states and 205 transitions. [2021-05-02 18:42:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 18:42:36,277 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 [2021-05-02 18:42:36,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:42:36,278 INFO L225 Difference]: With dead ends: 184 [2021-05-02 18:42:36,278 INFO L226 Difference]: Without dead ends: 184 [2021-05-02 18:42:36,279 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 4869.8ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 18:42:36,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-05-02 18:42:36,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-05-02 18:42:36,288 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) [2021-05-02 18:42:36,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2021-05-02 18:42:36,289 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 181 [2021-05-02 18:42:36,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:42:36,289 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2021-05-02 18:42:36,289 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) [2021-05-02 18:42:36,289 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2021-05-02 18:42:36,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 18:42:36,290 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:42:36,290 INFO L523 BasicCegarLoop]: trace histogram [85, 65, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:42:36,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 18:42:36,505 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:42:36,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:42:36,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1752443523, now seen corresponding path program 62 times [2021-05-02 18:42:36,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:42:36,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615514739] [2021-05-02 18:42:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:42:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:42:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7226 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:42:38,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:42:38,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615514739] [2021-05-02 18:42:38,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615514739] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:38,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639251467] [2021-05-02 18:42:38,232 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 [2021-05-02 18:42:38,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:42:38,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:42:38,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 18:42:38,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:42:38,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7226 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:42:38,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639251467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:38,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:42:38,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 18:42:38,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998718469] [2021-05-02 18:42:38,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 18:42:38,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:42:38,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 18:42:38,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:42:38,650 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) [2021-05-02 18:42:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:42:42,196 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2021-05-02 18:42:42,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 18:42:42,197 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 [2021-05-02 18:42:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:42:42,197 INFO L225 Difference]: With dead ends: 186 [2021-05-02 18:42:42,197 INFO L226 Difference]: Without dead ends: 186 [2021-05-02 18:42:42,198 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4961.4ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 18:42:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-05-02 18:42:42,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-05-02 18:42:42,200 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) [2021-05-02 18:42:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 207 transitions. [2021-05-02 18:42:42,200 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 207 transitions. Word has length 183 [2021-05-02 18:42:42,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:42:42,200 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 207 transitions. [2021-05-02 18:42:42,200 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) [2021-05-02 18:42:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 207 transitions. [2021-05-02 18:42:42,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 18:42:42,201 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:42:42,201 INFO L523 BasicCegarLoop]: trace histogram [86, 66, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:42:42,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:42:42,418 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:42:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:42:42,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1574429473, now seen corresponding path program 63 times [2021-05-02 18:42:42,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:42:42,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428984324] [2021-05-02 18:42:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:42:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:42:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2613 proven. 4422 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:42:44,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:42:44,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428984324] [2021-05-02 18:42:44,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428984324] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:44,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45705632] [2021-05-02 18:42:44,326 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 [2021-05-02 18:42:44,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-02 18:42:44,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:42:44,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 18:42:44,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:42:44,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:44,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:45,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:46,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:46,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:46,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:46,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2706 proven. 400 refuted. 0 times theorem prover too weak. 4291 trivial. 0 not checked. [2021-05-02 18:42:46,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45705632] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:46,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:42:46,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 23] total 91 [2021-05-02 18:42:46,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615977671] [2021-05-02 18:42:46,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:42:46,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:42:46,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:42:46,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:42:46,186 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) [2021-05-02 18:42:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:42:51,608 INFO L93 Difference]: Finished difference Result 191 states and 214 transitions. [2021-05-02 18:42:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:42:51,609 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 [2021-05-02 18:42:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:42:51,610 INFO L225 Difference]: With dead ends: 191 [2021-05-02 18:42:51,610 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 18:42:51,611 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 8329.3ms TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2021-05-02 18:42:51,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 18:42:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-02 18:42:51,612 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) [2021-05-02 18:42:51,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2021-05-02 18:42:51,613 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 185 [2021-05-02 18:42:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:42:51,613 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2021-05-02 18:42:51,613 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) [2021-05-02 18:42:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2021-05-02 18:42:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 18:42:51,614 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:42:51,614 INFO L523 BasicCegarLoop]: trace histogram [88, 67, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:42:51,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 18:42:51,829 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:42:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:42:51,830 INFO L82 PathProgramCache]: Analyzing trace with hash -135336330, now seen corresponding path program 64 times [2021-05-02 18:42:51,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:42:51,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686119168] [2021-05-02 18:42:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:42:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:53,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:42:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:42:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7745 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:42:53,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:42:53,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686119168] [2021-05-02 18:42:53,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686119168] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:53,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899700209] [2021-05-02 18:42:53,958 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 [2021-05-02 18:42:54,047 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:42:54,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:42:54,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 18:42:54,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:42:54,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:42:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7745 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:42:54,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899700209] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:42:54,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:42:54,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 18:42:54,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844186497] [2021-05-02 18:42:54,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 18:42:54,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:42:54,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 18:42:54,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 18:42:54,344 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) [2021-05-02 18:42:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:42:57,878 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2021-05-02 18:42:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:42:57,879 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 [2021-05-02 18:42:57,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:42:57,879 INFO L225 Difference]: With dead ends: 192 [2021-05-02 18:42:57,879 INFO L226 Difference]: Without dead ends: 192 [2021-05-02 18:42:57,880 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 5215.6ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 18:42:57,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-02 18:42:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-05-02 18:42:57,881 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) [2021-05-02 18:42:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2021-05-02 18:42:57,882 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 189 [2021-05-02 18:42:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:42:57,882 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2021-05-02 18:42:57,882 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) [2021-05-02 18:42:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2021-05-02 18:42:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 18:42:57,883 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:42:57,883 INFO L523 BasicCegarLoop]: trace histogram [89, 68, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:42:58,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 18:42:58,093 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:42:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:42:58,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2044548142, now seen corresponding path program 65 times [2021-05-02 18:42:58,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:42:58,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068971038] [2021-05-02 18:42:58,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:42:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:00,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:43:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:43:00,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:43:00,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068971038] [2021-05-02 18:43:00,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068971038] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:00,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266236798] [2021-05-02 18:43:00,238 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 [2021-05-02 18:43:00,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-02 18:43:00,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:43:00,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 18:43:00,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:43:00,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:43:00,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266236798] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:00,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:43:00,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 18:43:00,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718596144] [2021-05-02 18:43:00,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 18:43:00,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:43:00,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 18:43:00,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 18:43:00,649 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) [2021-05-02 18:43:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:43:04,581 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2021-05-02 18:43:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 18:43:04,582 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 [2021-05-02 18:43:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:43:04,583 INFO L225 Difference]: With dead ends: 194 [2021-05-02 18:43:04,583 INFO L226 Difference]: Without dead ends: 194 [2021-05-02 18:43:04,584 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 5616.7ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 18:43:04,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-05-02 18:43:04,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-05-02 18:43:04,585 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) [2021-05-02 18:43:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2021-05-02 18:43:04,585 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 191 [2021-05-02 18:43:04,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:43:04,586 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2021-05-02 18:43:04,586 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) [2021-05-02 18:43:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2021-05-02 18:43:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 18:43:04,586 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:43:04,586 INFO L523 BasicCegarLoop]: trace histogram [90, 69, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:43:04,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 18:43:04,797 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:43:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:43:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1448903214, now seen corresponding path program 66 times [2021-05-02 18:43:04,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:43:04,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761971460] [2021-05-02 18:43:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:43:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:06,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:43:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8101 backedges. 2870 proven. 4830 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:43:06,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:43:06,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761971460] [2021-05-02 18:43:06,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761971460] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:06,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331974569] [2021-05-02 18:43:06,711 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 [2021-05-02 18:43:06,902 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-02 18:43:06,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:43:06,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:43:06,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:43:07,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:07,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8101 backedges. 2967 proven. 441 refuted. 0 times theorem prover too weak. 4693 trivial. 0 not checked. [2021-05-02 18:43:08,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331974569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:08,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:43:08,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 24] total 95 [2021-05-02 18:43:08,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897864459] [2021-05-02 18:43:08,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 18:43:08,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:43:08,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 18:43:08,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 18:43:08,828 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) [2021-05-02 18:43:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:43:15,032 INFO L93 Difference]: Finished difference Result 199 states and 223 transitions. [2021-05-02 18:43:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:43:15,033 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 [2021-05-02 18:43:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:43:15,034 INFO L225 Difference]: With dead ends: 199 [2021-05-02 18:43:15,034 INFO L226 Difference]: Without dead ends: 199 [2021-05-02 18:43:15,036 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 9204.1ms TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2021-05-02 18:43:15,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-02 18:43:15,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-02 18:43:15,038 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) [2021-05-02 18:43:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-05-02 18:43:15,038 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 193 [2021-05-02 18:43:15,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:43:15,038 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-05-02 18:43:15,038 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) [2021-05-02 18:43:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-05-02 18:43:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 18:43:15,039 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:43:15,039 INFO L523 BasicCegarLoop]: trace histogram [92, 70, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:43:15,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:43:15,240 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:43:15,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:43:15,240 INFO L82 PathProgramCache]: Analyzing trace with hash -913104891, now seen corresponding path program 67 times [2021-05-02 18:43:15,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:43:15,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141890007] [2021-05-02 18:43:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:43:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:17,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:43:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8465 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:43:17,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:43:17,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141890007] [2021-05-02 18:43:17,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141890007] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:17,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030419493] [2021-05-02 18:43:17,487 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 [2021-05-02 18:43:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:17,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 18:43:17,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:43:17,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8465 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:43:17,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030419493] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:17,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:43:17,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-02 18:43:17,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011379798] [2021-05-02 18:43:17,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:43:17,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:43:17,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:43:17,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:43:17,806 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) [2021-05-02 18:43:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:43:21,327 INFO L93 Difference]: Finished difference Result 200 states and 223 transitions. [2021-05-02 18:43:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 18:43:21,328 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 [2021-05-02 18:43:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:43:21,328 INFO L225 Difference]: With dead ends: 200 [2021-05-02 18:43:21,329 INFO L226 Difference]: Without dead ends: 200 [2021-05-02 18:43:21,329 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 5302.4ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 18:43:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-02 18:43:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-02 18:43:21,331 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) [2021-05-02 18:43:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 223 transitions. [2021-05-02 18:43:21,331 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 223 transitions. Word has length 197 [2021-05-02 18:43:21,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:43:21,331 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 223 transitions. [2021-05-02 18:43:21,331 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) [2021-05-02 18:43:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 223 transitions. [2021-05-02 18:43:21,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 18:43:21,332 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:43:21,332 INFO L523 BasicCegarLoop]: trace histogram [93, 71, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:43:21,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:43:21,533 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:43:21,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:43:21,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1129431393, now seen corresponding path program 68 times [2021-05-02 18:43:21,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:43:21,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315493375] [2021-05-02 18:43:21,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:43:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:24,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:43:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:43:24,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:43:24,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315493375] [2021-05-02 18:43:24,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315493375] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:24,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801547481] [2021-05-02 18:43:24,254 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 [2021-05-02 18:43:24,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:43:24,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:43:24,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 18:43:24,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:43:24,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:43:24,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801547481] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:24,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:43:24,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 18:43:24,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487108474] [2021-05-02 18:43:24,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 18:43:24,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:43:24,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 18:43:24,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:43:24,715 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) [2021-05-02 18:43:28,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:43:28,843 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2021-05-02 18:43:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:43:28,844 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 [2021-05-02 18:43:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:43:28,844 INFO L225 Difference]: With dead ends: 202 [2021-05-02 18:43:28,844 INFO L226 Difference]: Without dead ends: 202 [2021-05-02 18:43:28,845 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 6504.4ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 18:43:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-02 18:43:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-05-02 18:43:28,848 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) [2021-05-02 18:43:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 225 transitions. [2021-05-02 18:43:28,848 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 225 transitions. Word has length 199 [2021-05-02 18:43:28,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:43:28,848 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 225 transitions. [2021-05-02 18:43:28,848 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) [2021-05-02 18:43:28,848 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 225 transitions. [2021-05-02 18:43:28,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 18:43:28,849 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:43:28,849 INFO L523 BasicCegarLoop]: trace histogram [94, 72, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:43:29,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:43:29,057 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:43:29,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:43:29,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1206746045, now seen corresponding path program 69 times [2021-05-02 18:43:29,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:43:29,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914502384] [2021-05-02 18:43:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:43:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:31,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:43:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8837 backedges. 3139 proven. 5256 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:43:31,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:43:31,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914502384] [2021-05-02 18:43:31,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914502384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:31,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578770860] [2021-05-02 18:43:31,362 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 [2021-05-02 18:43:31,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 18:43:31,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:43:31,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:43:31,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:43:31,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:31,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:31,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:31,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:31,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:31,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:31,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:31,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:31,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:31,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:32,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8837 backedges. 3240 proven. 484 refuted. 0 times theorem prover too weak. 5113 trivial. 0 not checked. [2021-05-02 18:43:33,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578770860] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:33,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:43:33,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 25] total 99 [2021-05-02 18:43:33,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483015805] [2021-05-02 18:43:33,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:43:33,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:43:33,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:43:33,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:43:33,416 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) [2021-05-02 18:43:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:43:40,413 INFO L93 Difference]: Finished difference Result 207 states and 232 transitions. [2021-05-02 18:43:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:43:40,414 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 [2021-05-02 18:43:40,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:43:40,415 INFO L225 Difference]: With dead ends: 207 [2021-05-02 18:43:40,415 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 18:43:40,416 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4632 ImplicationChecksByTransitivity, 10303.1ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-02 18:43:40,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 18:43:40,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-02 18:43:40,420 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) [2021-05-02 18:43:40,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 230 transitions. [2021-05-02 18:43:40,421 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 230 transitions. Word has length 201 [2021-05-02 18:43:40,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:43:40,421 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 230 transitions. [2021-05-02 18:43:40,421 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) [2021-05-02 18:43:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 230 transitions. [2021-05-02 18:43:40,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 18:43:40,422 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:43:40,422 INFO L523 BasicCegarLoop]: trace histogram [96, 73, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:43:40,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-05-02 18:43:40,638 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:43:40,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:43:40,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1134286292, now seen corresponding path program 70 times [2021-05-02 18:43:40,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:43:40,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897534430] [2021-05-02 18:43:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:43:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:43:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9217 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:43:43,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:43:43,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897534430] [2021-05-02 18:43:43,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897534430] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:43,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968857730] [2021-05-02 18:43:43,254 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 [2021-05-02 18:43:43,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:43:43,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:43:43,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 18:43:43,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:43:43,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9217 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:43:43,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968857730] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:43,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:43:43,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-02 18:43:43,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888927086] [2021-05-02 18:43:43,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 18:43:43,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:43:43,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 18:43:43,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:43:43,667 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) [2021-05-02 18:43:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:43:47,897 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2021-05-02 18:43:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 18:43:47,903 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 [2021-05-02 18:43:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:43:47,904 INFO L225 Difference]: With dead ends: 208 [2021-05-02 18:43:47,904 INFO L226 Difference]: Without dead ends: 208 [2021-05-02 18:43:47,905 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 6558.4ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 18:43:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-05-02 18:43:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-05-02 18:43:47,906 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) [2021-05-02 18:43:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 232 transitions. [2021-05-02 18:43:47,907 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 232 transitions. Word has length 205 [2021-05-02 18:43:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:43:47,907 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 232 transitions. [2021-05-02 18:43:47,907 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) [2021-05-02 18:43:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 232 transitions. [2021-05-02 18:43:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 18:43:47,908 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:43:47,908 INFO L523 BasicCegarLoop]: trace histogram [97, 74, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:43:48,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:43:48,108 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:43:48,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:43:48,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1908497200, now seen corresponding path program 71 times [2021-05-02 18:43:48,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:43:48,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183442089] [2021-05-02 18:43:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:43:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:50,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:43:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9410 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:43:50,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:43:50,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183442089] [2021-05-02 18:43:50,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183442089] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:50,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141758801] [2021-05-02 18:43:50,584 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 [2021-05-02 18:43:50,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 98 check-sat command(s) [2021-05-02 18:43:50,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:43:50,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 18:43:50,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:43:50,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:50,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9410 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:43:51,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141758801] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:51,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:43:51,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 18:43:51,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250442701] [2021-05-02 18:43:51,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:43:51,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:43:51,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:43:51,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:43:51,049 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) [2021-05-02 18:43:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:43:55,229 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2021-05-02 18:43:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 18:43:55,230 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 [2021-05-02 18:43:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:43:55,230 INFO L225 Difference]: With dead ends: 210 [2021-05-02 18:43:55,230 INFO L226 Difference]: Without dead ends: 210 [2021-05-02 18:43:55,231 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 6131.9ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 18:43:55,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-02 18:43:55,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-05-02 18:43:55,233 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) [2021-05-02 18:43:55,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2021-05-02 18:43:55,233 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 207 [2021-05-02 18:43:55,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:43:55,233 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2021-05-02 18:43:55,233 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) [2021-05-02 18:43:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2021-05-02 18:43:55,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 18:43:55,234 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:43:55,234 INFO L523 BasicCegarLoop]: trace histogram [98, 75, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:43:55,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:43:55,452 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:43:55,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:43:55,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1399129716, now seen corresponding path program 72 times [2021-05-02 18:43:55,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:43:55,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505112089] [2021-05-02 18:43:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:43:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:43:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:43:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9605 backedges. 3420 proven. 5700 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:43:57,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:43:57,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505112089] [2021-05-02 18:43:57,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505112089] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:43:57,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131155412] [2021-05-02 18:43:57,899 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 [2021-05-02 18:43:58,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-02 18:43:58,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:43:58,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:43:58,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:43:58,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:58,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:43:59,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9605 backedges. 3525 proven. 529 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2021-05-02 18:44:00,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131155412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:00,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:44:00,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 26] total 103 [2021-05-02 18:44:00,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173689363] [2021-05-02 18:44:00,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:44:00,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:44:00,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:44:00,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:44:00,015 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) [2021-05-02 18:44:07,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:44:07,525 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2021-05-02 18:44:07,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 18:44:07,525 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 [2021-05-02 18:44:07,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:44:07,528 INFO L225 Difference]: With dead ends: 215 [2021-05-02 18:44:07,528 INFO L226 Difference]: Without dead ends: 215 [2021-05-02 18:44:07,530 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5025 ImplicationChecksByTransitivity, 10797.5ms TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2021-05-02 18:44:07,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-02 18:44:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-05-02 18:44:07,538 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) [2021-05-02 18:44:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 239 transitions. [2021-05-02 18:44:07,539 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 239 transitions. Word has length 209 [2021-05-02 18:44:07,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:44:07,539 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 239 transitions. [2021-05-02 18:44:07,539 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) [2021-05-02 18:44:07,539 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 239 transitions. [2021-05-02 18:44:07,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 18:44:07,540 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:44:07,540 INFO L523 BasicCegarLoop]: trace histogram [100, 76, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:44:07,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:44:07,773 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:44:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:44:07,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1886584861, now seen corresponding path program 73 times [2021-05-02 18:44:07,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:44:07,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864346256] [2021-05-02 18:44:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:44:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:44:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10001 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:44:10,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:44:10,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864346256] [2021-05-02 18:44:10,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864346256] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:10,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559698724] [2021-05-02 18:44:10,568 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 [2021-05-02 18:44:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:10,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 18:44:10,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:44:10,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10001 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:44:10,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559698724] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:10,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:44:10,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-02 18:44:10,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981639643] [2021-05-02 18:44:10,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 18:44:10,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:44:10,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 18:44:10,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 18:44:10,995 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) [2021-05-02 18:44:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:44:15,808 INFO L93 Difference]: Finished difference Result 216 states and 241 transitions. [2021-05-02 18:44:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 18:44:15,808 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 [2021-05-02 18:44:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:44:15,809 INFO L225 Difference]: With dead ends: 216 [2021-05-02 18:44:15,809 INFO L226 Difference]: Without dead ends: 216 [2021-05-02 18:44:15,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 7044.4ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 18:44:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-05-02 18:44:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-05-02 18:44:15,812 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) [2021-05-02 18:44:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 241 transitions. [2021-05-02 18:44:15,812 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 241 transitions. Word has length 213 [2021-05-02 18:44:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:44:15,812 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 241 transitions. [2021-05-02 18:44:15,812 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) [2021-05-02 18:44:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 241 transitions. [2021-05-02 18:44:15,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 18:44:15,813 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:44:15,813 INFO L523 BasicCegarLoop]: trace histogram [101, 77, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:44:16,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-02 18:44:16,014 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:44:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:44:16,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1628083905, now seen corresponding path program 74 times [2021-05-02 18:44:16,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:44:16,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968624716] [2021-05-02 18:44:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:44:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:44:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10202 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:44:18,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:44:18,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968624716] [2021-05-02 18:44:18,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968624716] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:18,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898203036] [2021-05-02 18:44:18,630 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 [2021-05-02 18:44:18,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:44:18,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:44:18,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 18:44:18,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:44:18,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:18,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10202 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:44:19,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898203036] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:19,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:44:19,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 18:44:19,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333532495] [2021-05-02 18:44:19,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 18:44:19,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:44:19,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 18:44:19,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:44:19,080 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) [2021-05-02 18:44:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:44:24,588 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2021-05-02 18:44:24,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:44:24,589 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 [2021-05-02 18:44:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:44:24,590 INFO L225 Difference]: With dead ends: 218 [2021-05-02 18:44:24,590 INFO L226 Difference]: Without dead ends: 218 [2021-05-02 18:44:24,592 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 7489.4ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 18:44:24,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-02 18:44:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-02 18:44:24,594 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) [2021-05-02 18:44:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 243 transitions. [2021-05-02 18:44:24,595 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 243 transitions. Word has length 215 [2021-05-02 18:44:24,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:44:24,595 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 243 transitions. [2021-05-02 18:44:24,595 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) [2021-05-02 18:44:24,595 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 243 transitions. [2021-05-02 18:44:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 18:44:24,596 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:44:24,596 INFO L523 BasicCegarLoop]: trace histogram [102, 78, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:44:24,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:44:24,807 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:44:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:44:24,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1978198939, now seen corresponding path program 75 times [2021-05-02 18:44:24,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:44:24,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211552647] [2021-05-02 18:44:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:44:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:27,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:44:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10405 backedges. 3713 proven. 6162 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:44:27,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:44:27,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211552647] [2021-05-02 18:44:27,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211552647] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:27,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881395323] [2021-05-02 18:44:27,506 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 [2021-05-02 18:44:27,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-02 18:44:27,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:44:27,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:44:27,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:44:27,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:27,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:27,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:27,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:27,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:27,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:28,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 10405 backedges. 3822 proven. 576 refuted. 0 times theorem prover too weak. 6007 trivial. 0 not checked. [2021-05-02 18:44:29,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881395323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:29,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:44:29,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 27] total 107 [2021-05-02 18:44:29,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081549574] [2021-05-02 18:44:29,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 18:44:29,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:44:29,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 18:44:29,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:44:29,876 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) [2021-05-02 18:44:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:44:36,947 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2021-05-02 18:44:36,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 18:44:36,947 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 [2021-05-02 18:44:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:44:36,948 INFO L225 Difference]: With dead ends: 223 [2021-05-02 18:44:36,948 INFO L226 Difference]: Without dead ends: 223 [2021-05-02 18:44:36,950 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 11015.6ms TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2021-05-02 18:44:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-02 18:44:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-05-02 18:44:36,952 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) [2021-05-02 18:44:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 248 transitions. [2021-05-02 18:44:36,952 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 248 transitions. Word has length 217 [2021-05-02 18:44:36,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:44:36,952 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 248 transitions. [2021-05-02 18:44:36,964 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) [2021-05-02 18:44:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 248 transitions. [2021-05-02 18:44:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 18:44:36,965 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:44:36,966 INFO L523 BasicCegarLoop]: trace histogram [104, 79, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:44:37,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 18:44:37,185 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:44:37,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:44:37,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1313960398, now seen corresponding path program 76 times [2021-05-02 18:44:37,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:44:37,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894553596] [2021-05-02 18:44:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:44:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:44:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10817 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:44:39,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:44:39,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894553596] [2021-05-02 18:44:39,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894553596] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:39,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857330996] [2021-05-02 18:44:39,903 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 [2021-05-02 18:44:39,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:44:39,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:44:39,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 18:44:39,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:44:40,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10817 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:44:40,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857330996] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:40,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:44:40,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 18:44:40,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135244732] [2021-05-02 18:44:40,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 18:44:40,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:44:40,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 18:44:40,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:44:40,366 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) [2021-05-02 18:44:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:44:45,368 INFO L93 Difference]: Finished difference Result 224 states and 250 transitions. [2021-05-02 18:44:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:44:45,369 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 [2021-05-02 18:44:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:44:45,369 INFO L225 Difference]: With dead ends: 224 [2021-05-02 18:44:45,370 INFO L226 Difference]: Without dead ends: 224 [2021-05-02 18:44:45,371 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 7246.5ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 18:44:45,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-05-02 18:44:45,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-05-02 18:44:45,372 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) [2021-05-02 18:44:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 250 transitions. [2021-05-02 18:44:45,372 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 250 transitions. Word has length 221 [2021-05-02 18:44:45,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:44:45,373 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 250 transitions. [2021-05-02 18:44:45,373 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) [2021-05-02 18:44:45,373 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 250 transitions. [2021-05-02 18:44:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-02 18:44:45,373 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:44:45,374 INFO L523 BasicCegarLoop]: trace histogram [105, 80, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:44:45,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:44:45,581 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:44:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:44:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash 859167630, now seen corresponding path program 77 times [2021-05-02 18:44:45,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:44:45,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273358183] [2021-05-02 18:44:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:44:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:48,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:44:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:44:48,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:44:48,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273358183] [2021-05-02 18:44:48,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273358183] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:48,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050440145] [2021-05-02 18:44:48,364 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 [2021-05-02 18:44:48,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2021-05-02 18:44:48,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:44:48,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 18:44:48,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:44:48,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:44:48,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050440145] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:48,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:44:48,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 18:44:48,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941822911] [2021-05-02 18:44:48,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:44:48,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:44:48,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:44:48,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:44:48,867 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) [2021-05-02 18:44:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:44:53,710 INFO L93 Difference]: Finished difference Result 226 states and 252 transitions. [2021-05-02 18:44:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 18:44:53,711 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 [2021-05-02 18:44:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:44:53,712 INFO L225 Difference]: With dead ends: 226 [2021-05-02 18:44:53,712 INFO L226 Difference]: Without dead ends: 226 [2021-05-02 18:44:53,713 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 7086.9ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 18:44:53,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-05-02 18:44:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-05-02 18:44:53,729 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) [2021-05-02 18:44:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 252 transitions. [2021-05-02 18:44:53,729 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 252 transitions. Word has length 223 [2021-05-02 18:44:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:44:53,729 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 252 transitions. [2021-05-02 18:44:53,729 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) [2021-05-02 18:44:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 252 transitions. [2021-05-02 18:44:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-02 18:44:53,730 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:44:53,730 INFO L523 BasicCegarLoop]: trace histogram [106, 81, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:44:53,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:44:53,931 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:44:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:44:53,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1881096682, now seen corresponding path program 78 times [2021-05-02 18:44:53,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:44:53,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928314519] [2021-05-02 18:44:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:44:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:56,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:44:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:44:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 4018 proven. 6642 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:44:56,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:44:56,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928314519] [2021-05-02 18:44:56,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928314519] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:56,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642263825] [2021-05-02 18:44:56,565 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 [2021-05-02 18:44:56,745 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-02 18:44:56,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:44:56,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:44:56,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:44:56,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:56,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:57,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:58,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:59,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:59,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:44:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 4131 proven. 625 refuted. 0 times theorem prover too weak. 6481 trivial. 0 not checked. [2021-05-02 18:44:59,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642263825] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:44:59,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:44:59,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 28] total 111 [2021-05-02 18:44:59,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194225058] [2021-05-02 18:44:59,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 18:44:59,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:44:59,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 18:44:59,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 18:44:59,162 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) [2021-05-02 18:45:08,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:45:08,820 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2021-05-02 18:45:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 18:45:08,821 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 [2021-05-02 18:45:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:45:08,822 INFO L225 Difference]: With dead ends: 231 [2021-05-02 18:45:08,822 INFO L226 Difference]: Without dead ends: 231 [2021-05-02 18:45:08,824 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5859 ImplicationChecksByTransitivity, 13339.1ms TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2021-05-02 18:45:08,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-05-02 18:45:08,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-05-02 18:45:08,826 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) [2021-05-02 18:45:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2021-05-02 18:45:08,826 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 225 [2021-05-02 18:45:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:45:08,827 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2021-05-02 18:45:08,827 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) [2021-05-02 18:45:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2021-05-02 18:45:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 18:45:08,837 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:45:08,837 INFO L523 BasicCegarLoop]: trace histogram [108, 82, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:45:09,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:45:09,038 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:45:09,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:45:09,038 INFO L82 PathProgramCache]: Analyzing trace with hash -401837887, now seen corresponding path program 79 times [2021-05-02 18:45:09,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:45:09,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245253006] [2021-05-02 18:45:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:45:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:11,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:45:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11665 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:45:11,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:45:11,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245253006] [2021-05-02 18:45:11,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245253006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:45:11,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558223652] [2021-05-02 18:45:11,600 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 [2021-05-02 18:45:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:11,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 18:45:11,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:45:11,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:11,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 11665 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:45:12,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558223652] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:45:12,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:45:12,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-02 18:45:12,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880091715] [2021-05-02 18:45:12,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:45:12,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:45:12,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:45:12,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:45:12,141 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) [2021-05-02 18:45:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:45:18,204 INFO L93 Difference]: Finished difference Result 232 states and 259 transitions. [2021-05-02 18:45:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 18:45:18,205 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 [2021-05-02 18:45:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:45:18,206 INFO L225 Difference]: With dead ends: 232 [2021-05-02 18:45:18,206 INFO L226 Difference]: Without dead ends: 232 [2021-05-02 18:45:18,207 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 8102.1ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 18:45:18,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-02 18:45:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-05-02 18:45:18,208 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) [2021-05-02 18:45:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 259 transitions. [2021-05-02 18:45:18,209 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 259 transitions. Word has length 229 [2021-05-02 18:45:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:45:18,209 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 259 transitions. [2021-05-02 18:45:18,209 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) [2021-05-02 18:45:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 259 transitions. [2021-05-02 18:45:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-02 18:45:18,210 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:45:18,210 INFO L523 BasicCegarLoop]: trace histogram [109, 83, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:45:18,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:45:18,411 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:45:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:45:18,411 INFO L82 PathProgramCache]: Analyzing trace with hash -795958755, now seen corresponding path program 80 times [2021-05-02 18:45:18,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:45:18,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306826493] [2021-05-02 18:45:18,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:45:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:21,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:45:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11882 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:45:21,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:45:21,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306826493] [2021-05-02 18:45:21,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306826493] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:45:21,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782188458] [2021-05-02 18:45:21,749 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 [2021-05-02 18:45:21,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:45:21,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:45:21,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 18:45:21,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:45:21,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:21,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 11882 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:45:22,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782188458] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:45:22,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:45:22,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 18:45:22,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044228764] [2021-05-02 18:45:22,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:45:22,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:45:22,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:45:22,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:45:22,362 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) [2021-05-02 18:45:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:45:28,456 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2021-05-02 18:45:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:45:28,457 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 [2021-05-02 18:45:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:45:28,458 INFO L225 Difference]: With dead ends: 234 [2021-05-02 18:45:28,458 INFO L226 Difference]: Without dead ends: 234 [2021-05-02 18:45:28,459 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 8941.0ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:45:28,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-05-02 18:45:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-05-02 18:45:28,461 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) [2021-05-02 18:45:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 261 transitions. [2021-05-02 18:45:28,462 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 261 transitions. Word has length 231 [2021-05-02 18:45:28,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:45:28,462 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 261 transitions. [2021-05-02 18:45:28,462 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) [2021-05-02 18:45:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 261 transitions. [2021-05-02 18:45:28,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 18:45:28,463 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:45:28,463 INFO L523 BasicCegarLoop]: trace histogram [110, 84, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:45:28,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:45:28,673 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:45:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:45:28,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1588990855, now seen corresponding path program 81 times [2021-05-02 18:45:28,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:45:28,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919633772] [2021-05-02 18:45:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:45:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:32,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:45:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12101 backedges. 4335 proven. 7140 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:45:32,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:45:32,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919633772] [2021-05-02 18:45:32,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919633772] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:45:32,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284765269] [2021-05-02 18:45:32,032 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 [2021-05-02 18:45:32,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-02 18:45:32,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:45:32,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 18:45:32,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:45:32,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:32,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:33,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:34,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:35,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:35,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12101 backedges. 4452 proven. 676 refuted. 0 times theorem prover too weak. 6973 trivial. 0 not checked. [2021-05-02 18:45:35,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284765269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:45:35,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:45:35,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 29] total 115 [2021-05-02 18:45:35,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829645403] [2021-05-02 18:45:35,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-02 18:45:35,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:45:35,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-02 18:45:35,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:45:35,148 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) [2021-05-02 18:45:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:45:45,484 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2021-05-02 18:45:45,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-02 18:45:45,485 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 [2021-05-02 18:45:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:45:45,485 INFO L225 Difference]: With dead ends: 239 [2021-05-02 18:45:45,485 INFO L226 Difference]: Without dead ends: 239 [2021-05-02 18:45:45,487 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6300 ImplicationChecksByTransitivity, 15284.2ms TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2021-05-02 18:45:45,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-05-02 18:45:45,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-05-02 18:45:45,489 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) [2021-05-02 18:45:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-05-02 18:45:45,489 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 233 [2021-05-02 18:45:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:45:45,489 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-05-02 18:45:45,489 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) [2021-05-02 18:45:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-05-02 18:45:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-02 18:45:45,490 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:45:45,490 INFO L523 BasicCegarLoop]: trace histogram [112, 85, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:45:45,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:45:45,691 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:45:45,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:45:45,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1232508816, now seen corresponding path program 82 times [2021-05-02 18:45:45,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:45:45,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118296049] [2021-05-02 18:45:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:45:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:49,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:45:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12545 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:45:49,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:45:49,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118296049] [2021-05-02 18:45:49,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118296049] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:45:49,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090433434] [2021-05-02 18:45:49,221 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 [2021-05-02 18:45:49,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:45:49,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:45:49,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 18:45:49,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:45:49,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:45:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12545 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:45:49,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090433434] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:45:49,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:45:49,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 18:45:49,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747059678] [2021-05-02 18:45:49,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 18:45:49,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:45:49,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 18:45:49,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:45:49,787 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) [2021-05-02 18:45:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:45:56,314 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2021-05-02 18:45:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:45:56,314 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 [2021-05-02 18:45:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:45:56,315 INFO L225 Difference]: With dead ends: 240 [2021-05-02 18:45:56,315 INFO L226 Difference]: Without dead ends: 240 [2021-05-02 18:45:56,316 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 9520.6ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 18:45:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-02 18:45:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-05-02 18:45:56,318 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) [2021-05-02 18:45:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 268 transitions. [2021-05-02 18:45:56,318 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 268 transitions. Word has length 237 [2021-05-02 18:45:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:45:56,318 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 268 transitions. [2021-05-02 18:45:56,319 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) [2021-05-02 18:45:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 268 transitions. [2021-05-02 18:45:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 18:45:56,319 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:45:56,319 INFO L523 BasicCegarLoop]: trace histogram [113, 86, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:45:56,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:45:56,520 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:45:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:45:56,520 INFO L82 PathProgramCache]: Analyzing trace with hash -238048020, now seen corresponding path program 83 times [2021-05-02 18:45:56,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:45:56,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998834274] [2021-05-02 18:45:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:45:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:59,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:45:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:45:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12770 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:45:59,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:45:59,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998834274] [2021-05-02 18:45:59,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998834274] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:45:59,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195339664] [2021-05-02 18:45:59,898 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 [2021-05-02 18:46:00,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-02 18:46:00,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:46:00,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 18:46:00,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:46:00,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12770 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:46:00,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195339664] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:46:00,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:46:00,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 18:46:00,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565774948] [2021-05-02 18:46:00,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:46:00,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:46:00,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:46:00,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:46:00,415 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) [2021-05-02 18:46:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:46:05,836 INFO L93 Difference]: Finished difference Result 242 states and 270 transitions. [2021-05-02 18:46:05,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 18:46:05,837 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 [2021-05-02 18:46:05,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:46:05,838 INFO L225 Difference]: With dead ends: 242 [2021-05-02 18:46:05,838 INFO L226 Difference]: Without dead ends: 242 [2021-05-02 18:46:05,839 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 8277.1ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 18:46:05,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-05-02 18:46:05,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-05-02 18:46:05,841 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) [2021-05-02 18:46:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 270 transitions. [2021-05-02 18:46:05,841 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 270 transitions. Word has length 239 [2021-05-02 18:46:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:46:05,841 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 270 transitions. [2021-05-02 18:46:05,841 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) [2021-05-02 18:46:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 270 transitions. [2021-05-02 18:46:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-02 18:46:05,842 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:46:05,842 INFO L523 BasicCegarLoop]: trace histogram [114, 87, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:46:06,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 18:46:06,043 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:46:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:46:06,043 INFO L82 PathProgramCache]: Analyzing trace with hash -398927032, now seen corresponding path program 84 times [2021-05-02 18:46:06,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:46:06,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311696204] [2021-05-02 18:46:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:46:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:46:09,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:46:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:46:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12997 backedges. 4664 proven. 7656 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:46:09,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:46:09,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311696204] [2021-05-02 18:46:09,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311696204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:46:09,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402243761] [2021-05-02 18:46:09,699 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 [2021-05-02 18:46:09,909 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-02 18:46:09,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:46:09,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:46:09,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:46:10,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:10,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:11,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12997 backedges. 4785 proven. 729 refuted. 0 times theorem prover too weak. 7483 trivial. 0 not checked. [2021-05-02 18:46:12,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402243761] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:46:12,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:46:12,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 30] total 119 [2021-05-02 18:46:12,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560101803] [2021-05-02 18:46:12,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-02 18:46:12,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:46:12,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-02 18:46:12,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 18:46:12,978 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) [2021-05-02 18:46:23,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:46:23,534 INFO L93 Difference]: Finished difference Result 247 states and 277 transitions. [2021-05-02 18:46:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-02 18:46:23,534 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 [2021-05-02 18:46:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:46:23,535 INFO L225 Difference]: With dead ends: 247 [2021-05-02 18:46:23,535 INFO L226 Difference]: Without dead ends: 247 [2021-05-02 18:46:23,538 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6757 ImplicationChecksByTransitivity, 15962.8ms TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2021-05-02 18:46:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-02 18:46:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2021-05-02 18:46:23,540 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) [2021-05-02 18:46:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 275 transitions. [2021-05-02 18:46:23,541 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 275 transitions. Word has length 241 [2021-05-02 18:46:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:46:23,541 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 275 transitions. [2021-05-02 18:46:23,541 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) [2021-05-02 18:46:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2021-05-02 18:46:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 18:46:23,542 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:46:23,542 INFO L523 BasicCegarLoop]: trace histogram [116, 88, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:46:23,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:46:23,753 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:46:23,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:46:23,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1535053153, now seen corresponding path program 85 times [2021-05-02 18:46:23,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:46:23,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873281766] [2021-05-02 18:46:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:46:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:46:27,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:46:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:46:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13457 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:46:27,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:46:27,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873281766] [2021-05-02 18:46:27,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873281766] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:46:27,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196120016] [2021-05-02 18:46:27,458 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 [2021-05-02 18:46:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:46:27,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 18:46:27,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:46:27,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:27,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:28,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:28,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:28,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13457 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:46:28,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196120016] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:46:28,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:46:28,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-02 18:46:28,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498630257] [2021-05-02 18:46:28,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:46:28,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:46:28,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:46:28,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:46:28,097 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) [2021-05-02 18:46:34,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:46:34,693 INFO L93 Difference]: Finished difference Result 248 states and 277 transitions. [2021-05-02 18:46:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 18:46:34,694 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 [2021-05-02 18:46:34,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:46:34,695 INFO L225 Difference]: With dead ends: 248 [2021-05-02 18:46:34,695 INFO L226 Difference]: Without dead ends: 248 [2021-05-02 18:46:34,696 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 9754.2ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 18:46:34,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-02 18:46:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-05-02 18:46:34,697 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) [2021-05-02 18:46:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 277 transitions. [2021-05-02 18:46:34,698 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 277 transitions. Word has length 245 [2021-05-02 18:46:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:46:34,698 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 277 transitions. [2021-05-02 18:46:34,698 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) [2021-05-02 18:46:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 277 transitions. [2021-05-02 18:46:34,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-02 18:46:34,699 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:46:34,699 INFO L523 BasicCegarLoop]: trace histogram [117, 89, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:46:34,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-02 18:46:34,900 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:46:34,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:46:34,900 INFO L82 PathProgramCache]: Analyzing trace with hash -913511429, now seen corresponding path program 86 times [2021-05-02 18:46:34,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:46:34,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439810306] [2021-05-02 18:46:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:46:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:46:38,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:46:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:46:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:46:38,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:46:38,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439810306] [2021-05-02 18:46:38,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439810306] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:46:38,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740577510] [2021-05-02 18:46:38,561 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 [2021-05-02 18:46:38,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:46:38,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:46:38,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 18:46:38,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:46:38,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:38,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:46:39,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740577510] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:46:39,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:46:39,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 18:46:39,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511042297] [2021-05-02 18:46:39,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:46:39,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:46:39,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:46:39,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:46:39,189 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) [2021-05-02 18:46:45,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:46:45,811 INFO L93 Difference]: Finished difference Result 250 states and 279 transitions. [2021-05-02 18:46:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:46:45,812 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 [2021-05-02 18:46:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:46:45,813 INFO L225 Difference]: With dead ends: 250 [2021-05-02 18:46:45,813 INFO L226 Difference]: Without dead ends: 250 [2021-05-02 18:46:45,814 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 9789.0ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:46:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-02 18:46:45,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-05-02 18:46:45,815 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) [2021-05-02 18:46:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 279 transitions. [2021-05-02 18:46:45,816 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 279 transitions. Word has length 247 [2021-05-02 18:46:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:46:45,816 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 279 transitions. [2021-05-02 18:46:45,816 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) [2021-05-02 18:46:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 279 transitions. [2021-05-02 18:46:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-02 18:46:45,817 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:46:45,817 INFO L523 BasicCegarLoop]: trace histogram [118, 90, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:46:46,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:46:46,025 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:46:46,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:46:46,025 INFO L82 PathProgramCache]: Analyzing trace with hash -612368809, now seen corresponding path program 87 times [2021-05-02 18:46:46,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:46:46,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637168314] [2021-05-02 18:46:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:46:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:46:49,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:46:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:46:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13925 backedges. 5005 proven. 8190 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:46:49,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:46:49,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637168314] [2021-05-02 18:46:49,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637168314] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:46:49,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211207203] [2021-05-02 18:46:49,923 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 [2021-05-02 18:46:50,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 18:46:50,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:46:50,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:46:50,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:46:50,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:50,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:51,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:52,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:53,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:53,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:53,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:53,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:53,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:53,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:46:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 13925 backedges. 5130 proven. 784 refuted. 0 times theorem prover too weak. 8011 trivial. 0 not checked. [2021-05-02 18:46:53,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211207203] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:46:53,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:46:53,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 31] total 123 [2021-05-02 18:46:53,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324722500] [2021-05-02 18:46:53,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-02 18:46:53,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:46:53,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-02 18:46:53,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:46:53,341 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) [2021-05-02 18:47:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:47:04,582 INFO L93 Difference]: Finished difference Result 255 states and 286 transitions. [2021-05-02 18:47:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-02 18:47:04,582 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 [2021-05-02 18:47:04,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:47:04,583 INFO L225 Difference]: With dead ends: 255 [2021-05-02 18:47:04,583 INFO L226 Difference]: Without dead ends: 255 [2021-05-02 18:47:04,585 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7230 ImplicationChecksByTransitivity, 17039.6ms TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2021-05-02 18:47:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-05-02 18:47:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-05-02 18:47:04,587 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) [2021-05-02 18:47:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2021-05-02 18:47:04,587 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 249 [2021-05-02 18:47:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:47:04,588 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2021-05-02 18:47:04,588 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) [2021-05-02 18:47:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2021-05-02 18:47:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-02 18:47:04,589 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:47:04,589 INFO L523 BasicCegarLoop]: trace histogram [120, 91, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:47:04,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:47:04,789 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:47:04,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:47:04,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1635552786, now seen corresponding path program 88 times [2021-05-02 18:47:04,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:47:04,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338760074] [2021-05-02 18:47:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:47:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:47:08,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:47:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:47:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14401 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:47:08,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:47:08,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338760074] [2021-05-02 18:47:08,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338760074] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:47:08,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793910259] [2021-05-02 18:47:08,979 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 [2021-05-02 18:47:09,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:47:09,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:47:09,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 18:47:09,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:47:09,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14401 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:47:09,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793910259] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:47:09,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:47:09,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 18:47:09,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634888083] [2021-05-02 18:47:09,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:47:09,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:47:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:47:09,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:47:09,640 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) [2021-05-02 18:47:16,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:47:16,611 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2021-05-02 18:47:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:47:16,612 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 [2021-05-02 18:47:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:47:16,612 INFO L225 Difference]: With dead ends: 256 [2021-05-02 18:47:16,613 INFO L226 Difference]: Without dead ends: 256 [2021-05-02 18:47:16,614 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 10713.7ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:47:16,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-05-02 18:47:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-05-02 18:47:16,615 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) [2021-05-02 18:47:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 286 transitions. [2021-05-02 18:47:16,616 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 286 transitions. Word has length 253 [2021-05-02 18:47:16,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:47:16,616 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 286 transitions. [2021-05-02 18:47:16,616 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) [2021-05-02 18:47:16,616 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 286 transitions. [2021-05-02 18:47:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-05-02 18:47:16,617 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:47:16,617 INFO L523 BasicCegarLoop]: trace histogram [121, 92, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:47:16,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:47:16,825 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:47:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:47:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1629376330, now seen corresponding path program 89 times [2021-05-02 18:47:16,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:47:16,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553072485] [2021-05-02 18:47:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:47:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:47:20,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:47:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:47:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14642 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:47:20,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:47:20,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553072485] [2021-05-02 18:47:20,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553072485] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:47:20,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680361601] [2021-05-02 18:47:20,985 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 [2021-05-02 18:47:21,139 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2021-05-02 18:47:21,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:47:21,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:47:21,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:47:21,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14642 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:47:21,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680361601] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:47:21,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:47:21,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 18:47:21,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864340290] [2021-05-02 18:47:21,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:47:21,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:47:21,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:47:21,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:47:21,720 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) [2021-05-02 18:47:28,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:47:28,915 INFO L93 Difference]: Finished difference Result 258 states and 288 transitions. [2021-05-02 18:47:28,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 18:47:28,916 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 [2021-05-02 18:47:28,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:47:28,916 INFO L225 Difference]: With dead ends: 258 [2021-05-02 18:47:28,916 INFO L226 Difference]: Without dead ends: 258 [2021-05-02 18:47:28,918 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 10824.2ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 18:47:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-05-02 18:47:28,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-05-02 18:47:28,919 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) [2021-05-02 18:47:28,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 288 transitions. [2021-05-02 18:47:28,920 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 288 transitions. Word has length 255 [2021-05-02 18:47:28,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:47:28,920 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 288 transitions. [2021-05-02 18:47:28,920 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) [2021-05-02 18:47:28,920 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 288 transitions. [2021-05-02 18:47:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 18:47:28,921 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:47:28,921 INFO L523 BasicCegarLoop]: trace histogram [122, 93, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:47:29,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:47:29,122 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:47:29,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:47:29,122 INFO L82 PathProgramCache]: Analyzing trace with hash -394836570, now seen corresponding path program 90 times [2021-05-02 18:47:29,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:47:29,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725154225] [2021-05-02 18:47:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:47:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:47:33,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:47:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:47:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 5358 proven. 8742 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:47:33,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:47:33,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725154225] [2021-05-02 18:47:33,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725154225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:47:33,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466035947] [2021-05-02 18:47:33,459 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 [2021-05-02 18:47:33,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-02 18:47:33,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:47:33,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:47:33,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:47:33,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:33,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:34,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:35,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:36,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:37,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:37,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:37,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:37,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:37,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:37,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 5487 proven. 841 refuted. 0 times theorem prover too weak. 8557 trivial. 0 not checked. [2021-05-02 18:47:37,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466035947] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:47:37,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:47:37,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 32] total 127 [2021-05-02 18:47:37,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613651421] [2021-05-02 18:47:37,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 127 states [2021-05-02 18:47:37,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:47:37,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-05-02 18:47:37,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2021-05-02 18:47:37,476 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) [2021-05-02 18:47:50,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:47:50,392 INFO L93 Difference]: Finished difference Result 263 states and 295 transitions. [2021-05-02 18:47:50,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-02 18:47:50,393 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 [2021-05-02 18:47:50,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:47:50,394 INFO L225 Difference]: With dead ends: 263 [2021-05-02 18:47:50,394 INFO L226 Difference]: Without dead ends: 263 [2021-05-02 18:47:50,396 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7719 ImplicationChecksByTransitivity, 19494.1ms TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2021-05-02 18:47:50,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-02 18:47:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-05-02 18:47:50,398 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) [2021-05-02 18:47:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2021-05-02 18:47:50,398 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 257 [2021-05-02 18:47:50,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:47:50,399 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2021-05-02 18:47:50,399 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) [2021-05-02 18:47:50,399 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2021-05-02 18:47:50,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-02 18:47:50,400 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:47:50,400 INFO L523 BasicCegarLoop]: trace histogram [124, 94, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:47:50,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-02 18:47:50,609 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:47:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:47:50,609 INFO L82 PathProgramCache]: Analyzing trace with hash 312083837, now seen corresponding path program 91 times [2021-05-02 18:47:50,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:47:50,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62999666] [2021-05-02 18:47:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:47:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:47:55,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:47:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:47:55,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15377 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:47:55,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:47:55,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62999666] [2021-05-02 18:47:55,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62999666] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:47:55,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062993745] [2021-05-02 18:47:55,678 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 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 [2021-05-02 18:47:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:47:55,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 18:47:55,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:47:55,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:55,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:47:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 15377 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:47:56,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062993745] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:47:56,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:47:56,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-02 18:47:56,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723378136] [2021-05-02 18:47:56,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:47:56,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:47:56,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:47:56,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:47:56,563 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) [2021-05-02 18:48:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:04,678 INFO L93 Difference]: Finished difference Result 264 states and 295 transitions. [2021-05-02 18:48:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 18:48:04,679 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 [2021-05-02 18:48:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:04,680 INFO L225 Difference]: With dead ends: 264 [2021-05-02 18:48:04,680 INFO L226 Difference]: Without dead ends: 264 [2021-05-02 18:48:04,681 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 12489.3ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 18:48:04,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-05-02 18:48:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-05-02 18:48:04,683 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) [2021-05-02 18:48:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2021-05-02 18:48:04,684 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 261 [2021-05-02 18:48:04,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:04,684 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2021-05-02 18:48:04,684 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) [2021-05-02 18:48:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2021-05-02 18:48:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-02 18:48:04,685 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:04,685 INFO L523 BasicCegarLoop]: trace histogram [125, 95, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:48:04,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:48:04,893 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:48:04,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:48:04,893 INFO L82 PathProgramCache]: Analyzing trace with hash -140523815, now seen corresponding path program 92 times [2021-05-02 18:48:04,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:48:04,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493441146] [2021-05-02 18:48:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:48:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:09,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:48:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15626 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:48:09,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:48:09,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493441146] [2021-05-02 18:48:09,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493441146] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:09,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751902320] [2021-05-02 18:48:09,847 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 [2021-05-02 18:48:09,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:48:09,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:48:09,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 18:48:09,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:48:09,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:09,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15626 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:48:10,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751902320] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:10,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:48:10,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 18:48:10,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599795384] [2021-05-02 18:48:10,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:48:10,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:48:10,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:48:10,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:48:10,548 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) [2021-05-02 18:48:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:18,879 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2021-05-02 18:48:18,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:48:18,880 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 [2021-05-02 18:48:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:18,881 INFO L225 Difference]: With dead ends: 266 [2021-05-02 18:48:18,881 INFO L226 Difference]: Without dead ends: 266 [2021-05-02 18:48:18,882 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 12714.4ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 18:48:18,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-05-02 18:48:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-05-02 18:48:18,884 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) [2021-05-02 18:48:18,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 297 transitions. [2021-05-02 18:48:18,884 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 297 transitions. Word has length 263 [2021-05-02 18:48:18,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:18,884 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 297 transitions. [2021-05-02 18:48:18,885 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) [2021-05-02 18:48:18,885 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 297 transitions. [2021-05-02 18:48:18,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-02 18:48:18,885 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:18,885 INFO L523 BasicCegarLoop]: trace histogram [126, 96, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:48:19,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-02 18:48:19,086 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:48:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:48:19,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1304780491, now seen corresponding path program 93 times [2021-05-02 18:48:19,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:48:19,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022266723] [2021-05-02 18:48:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:48:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:24,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:48:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 5723 proven. 9312 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:48:24,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:48:24,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022266723] [2021-05-02 18:48:24,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022266723] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:24,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49995728] [2021-05-02 18:48:24,366 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 [2021-05-02 18:48:24,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-02 18:48:24,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:48:24,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:48:24,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:48:24,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:24,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:25,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:26,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:27,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 5856 proven. 900 refuted. 0 times theorem prover too weak. 9121 trivial. 0 not checked. [2021-05-02 18:48:28,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49995728] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:28,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:48:28,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 33] total 131 [2021-05-02 18:48:28,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055869163] [2021-05-02 18:48:28,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states [2021-05-02 18:48:28,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:48:28,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-05-02 18:48:28,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 18:48:28,982 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) [2021-05-02 18:48:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:43,505 INFO L93 Difference]: Finished difference Result 271 states and 304 transitions. [2021-05-02 18:48:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-05-02 18:48:43,506 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 [2021-05-02 18:48:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:43,507 INFO L225 Difference]: With dead ends: 271 [2021-05-02 18:48:43,507 INFO L226 Difference]: Without dead ends: 271 [2021-05-02 18:48:43,510 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8224 ImplicationChecksByTransitivity, 22444.9ms TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2021-05-02 18:48:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-05-02 18:48:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2021-05-02 18:48:43,512 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) [2021-05-02 18:48:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 302 transitions. [2021-05-02 18:48:43,512 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 302 transitions. Word has length 265 [2021-05-02 18:48:43,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:43,512 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 302 transitions. [2021-05-02 18:48:43,512 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) [2021-05-02 18:48:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 302 transitions. [2021-05-02 18:48:43,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 18:48:43,513 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:43,513 INFO L523 BasicCegarLoop]: trace histogram [128, 97, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:48:43,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:48:43,730 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:48:43,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:48:43,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1331389108, now seen corresponding path program 94 times [2021-05-02 18:48:43,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:48:43,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454909031] [2021-05-02 18:48:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:48:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:48:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:48:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16385 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 18:48:49,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:48:49,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454909031] [2021-05-02 18:48:49,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454909031] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:49,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837121452] [2021-05-02 18:48:49,269 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 [2021-05-02 18:48:49,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:48:49,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:48:49,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 18:48:49,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:48:49,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:49,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:48:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16385 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 18:48:50,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837121452] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:48:50,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:48:50,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-02 18:48:50,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087902869] [2021-05-02 18:48:50,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 18:48:50,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:48:50,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 18:48:50,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:48:50,154 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) [2021-05-02 18:48:59,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:48:59,950 INFO L93 Difference]: Finished difference Result 272 states and 304 transitions. [2021-05-02 18:48:59,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 18:48:59,951 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 [2021-05-02 18:48:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:48:59,952 INFO L225 Difference]: With dead ends: 272 [2021-05-02 18:48:59,952 INFO L226 Difference]: Without dead ends: 272 [2021-05-02 18:48:59,953 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 14634.6ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 18:48:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-02 18:48:59,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-02 18:48:59,955 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) [2021-05-02 18:48:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 304 transitions. [2021-05-02 18:48:59,955 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 304 transitions. Word has length 269 [2021-05-02 18:48:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:48:59,955 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 304 transitions. [2021-05-02 18:48:59,956 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) [2021-05-02 18:48:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 304 transitions. [2021-05-02 18:48:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-05-02 18:48:59,956 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:48:59,956 INFO L523 BasicCegarLoop]: trace histogram [129, 98, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:00,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:49:00,165 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:00,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:00,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1594801496, now seen corresponding path program 95 times [2021-05-02 18:49:00,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:00,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794517686] [2021-05-02 18:49:00,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16642 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 18:49:05,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:05,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794517686] [2021-05-02 18:49:05,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794517686] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:05,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714586176] [2021-05-02 18:49:05,878 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 [2021-05-02 18:49:06,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2021-05-02 18:49:06,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:06,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 18:49:06,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:06,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:06,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16642 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 18:49:07,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714586176] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:07,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:07,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 18:49:07,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805233950] [2021-05-02 18:49:07,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:49:07,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:07,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:49:07,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:49:07,081 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) [2021-05-02 18:49:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:16,332 INFO L93 Difference]: Finished difference Result 274 states and 306 transitions. [2021-05-02 18:49:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 18:49:16,333 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 [2021-05-02 18:49:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:16,334 INFO L225 Difference]: With dead ends: 274 [2021-05-02 18:49:16,334 INFO L226 Difference]: Without dead ends: 274 [2021-05-02 18:49:16,335 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 14225.7ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 18:49:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-05-02 18:49:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-05-02 18:49:16,337 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) [2021-05-02 18:49:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 306 transitions. [2021-05-02 18:49:16,337 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 306 transitions. Word has length 271 [2021-05-02 18:49:16,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:16,338 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 306 transitions. [2021-05-02 18:49:16,338 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) [2021-05-02 18:49:16,338 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 306 transitions. [2021-05-02 18:49:16,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-05-02 18:49:16,339 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:16,339 INFO L523 BasicCegarLoop]: trace histogram [130, 99, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:16,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-02 18:49:16,552 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:16,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1331035900, now seen corresponding path program 96 times [2021-05-02 18:49:16,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:16,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457734766] [2021-05-02 18:49:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:22,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 16901 backedges. 6100 proven. 9900 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 18:49:22,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:22,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457734766] [2021-05-02 18:49:22,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457734766] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:22,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143134215] [2021-05-02 18:49:22,904 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 [2021-05-02 18:49:23,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-02 18:49:23,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:49:23,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:49:23,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:23,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:23,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:24,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:25,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:26,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16901 backedges. 6237 proven. 961 refuted. 0 times theorem prover too weak. 9703 trivial. 0 not checked. [2021-05-02 18:49:27,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143134215] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:27,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:27,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 34] total 135 [2021-05-02 18:49:27,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534024520] [2021-05-02 18:49:27,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states [2021-05-02 18:49:27,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:27,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-05-02 18:49:27,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 18:49:27,978 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) [2021-05-02 18:49:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:49:45,818 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2021-05-02 18:49:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-05-02 18:49:45,819 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 [2021-05-02 18:49:45,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:49:45,820 INFO L225 Difference]: With dead ends: 279 [2021-05-02 18:49:45,820 INFO L226 Difference]: Without dead ends: 279 [2021-05-02 18:49:45,822 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8745 ImplicationChecksByTransitivity, 27048.9ms TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2021-05-02 18:49:45,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-05-02 18:49:45,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2021-05-02 18:49:45,825 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) [2021-05-02 18:49:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 311 transitions. [2021-05-02 18:49:45,825 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 311 transitions. Word has length 273 [2021-05-02 18:49:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:49:45,826 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 311 transitions. [2021-05-02 18:49:45,826 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) [2021-05-02 18:49:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 311 transitions. [2021-05-02 18:49:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-02 18:49:45,827 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:49:45,827 INFO L523 BasicCegarLoop]: trace histogram [132, 100, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:49:46,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 18:49:46,027 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:49:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:49:46,028 INFO L82 PathProgramCache]: Analyzing trace with hash -599316133, now seen corresponding path program 97 times [2021-05-02 18:49:46,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:49:46,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697490127] [2021-05-02 18:49:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:49:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:49:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 17425 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 18:49:51,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:49:51,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697490127] [2021-05-02 18:49:51,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697490127] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:51,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803224515] [2021-05-02 18:49:51,691 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 [2021-05-02 18:49:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:49:51,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 18:49:51,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:49:51,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:51,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:49:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 17425 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 18:49:52,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803224515] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:49:52,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:49:52,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-02 18:49:52,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501969426] [2021-05-02 18:49:52,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 18:49:52,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:49:52,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 18:49:52,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 18:49:52,599 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) [2021-05-02 18:50:01,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:01,944 INFO L93 Difference]: Finished difference Result 280 states and 313 transitions. [2021-05-02 18:50:01,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-02 18:50:01,945 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 [2021-05-02 18:50:01,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:01,946 INFO L225 Difference]: With dead ends: 280 [2021-05-02 18:50:01,946 INFO L226 Difference]: Without dead ends: 280 [2021-05-02 18:50:01,948 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 14295.7ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 18:50:01,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-02 18:50:01,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-05-02 18:50:01,950 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) [2021-05-02 18:50:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 313 transitions. [2021-05-02 18:50:01,951 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 313 transitions. Word has length 277 [2021-05-02 18:50:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:01,951 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 313 transitions. [2021-05-02 18:50:01,951 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) [2021-05-02 18:50:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 313 transitions. [2021-05-02 18:50:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-05-02 18:50:01,952 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:01,952 INFO L523 BasicCegarLoop]: trace histogram [133, 101, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:02,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:02,161 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:02,161 INFO L82 PathProgramCache]: Analyzing trace with hash 615953079, now seen corresponding path program 98 times [2021-05-02 18:50:02,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:02,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985463596] [2021-05-02 18:50:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 18:50:09,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:09,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985463596] [2021-05-02 18:50:09,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985463596] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:09,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538434700] [2021-05-02 18:50:09,024 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 [2021-05-02 18:50:09,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:50:09,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:09,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 18:50:09,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:09,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:09,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 18:50:10,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538434700] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:10,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:10,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-02 18:50:10,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683792541] [2021-05-02 18:50:10,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 18:50:10,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:10,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 18:50:10,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:50:10,034 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) [2021-05-02 18:50:21,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:21,099 INFO L93 Difference]: Finished difference Result 282 states and 315 transitions. [2021-05-02 18:50:21,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 18:50:21,100 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 [2021-05-02 18:50:21,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:21,101 INFO L225 Difference]: With dead ends: 282 [2021-05-02 18:50:21,101 INFO L226 Difference]: Without dead ends: 282 [2021-05-02 18:50:21,103 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 17033.4ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 18:50:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-05-02 18:50:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-05-02 18:50:21,105 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) [2021-05-02 18:50:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 315 transitions. [2021-05-02 18:50:21,106 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 315 transitions. Word has length 279 [2021-05-02 18:50:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:21,106 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 315 transitions. [2021-05-02 18:50:21,106 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) [2021-05-02 18:50:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 315 transitions. [2021-05-02 18:50:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-02 18:50:21,107 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:21,107 INFO L523 BasicCegarLoop]: trace histogram [134, 102, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:21,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 18:50:21,317 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:21,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:21,317 INFO L82 PathProgramCache]: Analyzing trace with hash 258561299, now seen corresponding path program 99 times [2021-05-02 18:50:21,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:21,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705246514] [2021-05-02 18:50:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:28,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17957 backedges. 6489 proven. 10506 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 18:50:28,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:28,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705246514] [2021-05-02 18:50:28,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705246514] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:28,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425073512] [2021-05-02 18:50:28,246 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 [2021-05-02 18:50:28,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-02 18:50:28,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:28,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 18:50:28,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:28,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:28,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:29,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:30,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:31,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:32,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 17957 backedges. 6630 proven. 1024 refuted. 0 times theorem prover too weak. 10303 trivial. 0 not checked. [2021-05-02 18:50:34,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425073512] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:34,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:34,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 35] total 139 [2021-05-02 18:50:34,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386898741] [2021-05-02 18:50:34,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 139 states [2021-05-02 18:50:34,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:34,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-05-02 18:50:34,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 18:50:34,053 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) [2021-05-02 18:50:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:54,707 INFO L93 Difference]: Finished difference Result 287 states and 322 transitions. [2021-05-02 18:50:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-05-02 18:50:54,708 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 [2021-05-02 18:50:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:54,709 INFO L225 Difference]: With dead ends: 287 [2021-05-02 18:50:54,709 INFO L226 Difference]: Without dead ends: 287 [2021-05-02 18:50:54,712 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9282 ImplicationChecksByTransitivity, 30971.9ms TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2021-05-02 18:50:54,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-05-02 18:50:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2021-05-02 18:50:54,714 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) [2021-05-02 18:50:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 320 transitions. [2021-05-02 18:50:54,715 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 320 transitions. Word has length 281 [2021-05-02 18:50:54,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:54,715 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 320 transitions. [2021-05-02 18:50:54,715 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) [2021-05-02 18:50:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 320 transitions. [2021-05-02 18:50:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-02 18:50:54,718 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:54,718 INFO L523 BasicCegarLoop]: trace histogram [136, 103, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:54,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 18:50:54,935 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:54,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:54,935 INFO L82 PathProgramCache]: Analyzing trace with hash -873883222, now seen corresponding path program 100 times [2021-05-02 18:50:54,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:54,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217283863] [2021-05-02 18:50:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18497 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 18:51:01,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:01,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217283863] [2021-05-02 18:51:01,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217283863] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:01,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552840533] [2021-05-02 18:51:01,865 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 [2021-05-02 18:51:01,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:01,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:01,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-02 18:51:01,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:01,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18497 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 18:51:02,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552840533] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:02,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:02,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-02 18:51:02,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018511794] [2021-05-02 18:51:02,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 18:51:02,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:02,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 18:51:02,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 18:51:02,781 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) [2021-05-02 18:51:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:13,828 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2021-05-02 18:51:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 18:51:13,829 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 [2021-05-02 18:51:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:13,830 INFO L225 Difference]: With dead ends: 288 [2021-05-02 18:51:13,830 INFO L226 Difference]: Without dead ends: 288 [2021-05-02 18:51:13,831 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 17116.0ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 18:51:13,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-05-02 18:51:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-05-02 18:51:13,833 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) [2021-05-02 18:51:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 322 transitions. [2021-05-02 18:51:13,833 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 322 transitions. Word has length 285 [2021-05-02 18:51:13,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:13,833 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 322 transitions. [2021-05-02 18:51:13,834 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) [2021-05-02 18:51:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 322 transitions. [2021-05-02 18:51:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-02 18:51:13,834 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:13,835 INFO L523 BasicCegarLoop]: trace histogram [137, 104, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:14,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 18:51:14,049 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:14,049 INFO L82 PathProgramCache]: Analyzing trace with hash 492308230, now seen corresponding path program 101 times [2021-05-02 18:51:14,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:14,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052209056] [2021-05-02 18:51:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:20,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:20,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18770 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 18:51:20,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:20,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052209056] [2021-05-02 18:51:20,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052209056] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:20,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075352644] [2021-05-02 18:51:20,889 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 [2021-05-02 18:51:21,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2021-05-02 18:51:21,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:21,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-02 18:51:21,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:21,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 18770 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 18:51:21,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075352644] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:21,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:21,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-02 18:51:21,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778440090] [2021-05-02 18:51:21,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 18:51:21,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:21,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 18:51:21,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 18:51:21,960 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) [2021-05-02 18:51:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:33,027 INFO L93 Difference]: Finished difference Result 290 states and 324 transitions. [2021-05-02 18:51:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 18:51:33,029 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 [2021-05-02 18:51:33,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:33,030 INFO L225 Difference]: With dead ends: 290 [2021-05-02 18:51:33,030 INFO L226 Difference]: Without dead ends: 290 [2021-05-02 18:51:33,032 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 17014.9ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 18:51:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-02 18:51:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-02 18:51:33,034 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) [2021-05-02 18:51:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 324 transitions. [2021-05-02 18:51:33,034 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 324 transitions. Word has length 287 [2021-05-02 18:51:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:33,035 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 324 transitions. [2021-05-02 18:51:33,035 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) [2021-05-02 18:51:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 324 transitions. [2021-05-02 18:51:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-05-02 18:51:33,036 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:33,036 INFO L523 BasicCegarLoop]: trace histogram [138, 105, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:33,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:33,245 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:33,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:33,245 INFO L82 PathProgramCache]: Analyzing trace with hash -857698974, now seen corresponding path program 102 times [2021-05-02 18:51:33,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:33,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264303973] [2021-05-02 18:51:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:40,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 19045 backedges. 6890 proven. 11130 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 18:51:40,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:40,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264303973] [2021-05-02 18:51:40,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264303973] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:40,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646887219] [2021-05-02 18:51:40,398 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 [2021-05-02 18:51:40,665 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2021-05-02 18:51:40,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:40,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 18:51:40,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:41,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:46,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:46,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:46,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 19045 backedges. 7035 proven. 1089 refuted. 0 times theorem prover too weak. 10921 trivial. 0 not checked. [2021-05-02 18:51:46,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646887219] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:46,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:46,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 36] total 143 [2021-05-02 18:51:46,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532599665] [2021-05-02 18:51:46,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 143 states [2021-05-02 18:51:46,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:46,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-05-02 18:51:46,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 18:51:46,406 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) [2021-05-02 18:52:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:05,969 INFO L93 Difference]: Finished difference Result 295 states and 331 transitions. [2021-05-02 18:52:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-05-02 18:52:05,970 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 [2021-05-02 18:52:05,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:05,971 INFO L225 Difference]: With dead ends: 295 [2021-05-02 18:52:05,971 INFO L226 Difference]: Without dead ends: 295 [2021-05-02 18:52:05,973 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9835 ImplicationChecksByTransitivity, 30291.6ms TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2021-05-02 18:52:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-05-02 18:52:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-05-02 18:52:05,975 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) [2021-05-02 18:52:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 329 transitions. [2021-05-02 18:52:05,976 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 329 transitions. Word has length 289 [2021-05-02 18:52:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:05,976 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 329 transitions. [2021-05-02 18:52:05,976 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) [2021-05-02 18:52:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 329 transitions. [2021-05-02 18:52:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 18:52:05,977 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:05,977 INFO L523 BasicCegarLoop]: trace histogram [140, 106, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:06,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-02 18:52:06,194 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:06,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:06,194 INFO L82 PathProgramCache]: Analyzing trace with hash -407380423, now seen corresponding path program 103 times [2021-05-02 18:52:06,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:06,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437913199] [2021-05-02 18:52:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 18:52:13,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:13,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437913199] [2021-05-02 18:52:13,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437913199] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:13,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134656728] [2021-05-02 18:52:13,563 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 [2021-05-02 18:52:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:13,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-02 18:52:13,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:13,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 18:52:14,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134656728] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:14,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:14,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 111 [2021-05-02 18:52:14,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721736397] [2021-05-02 18:52:14,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 18:52:14,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:14,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 18:52:14,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 18:52:14,720 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) [2021-05-02 18:52:28,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:28,746 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2021-05-02 18:52:28,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-02 18:52:28,747 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 [2021-05-02 18:52:28,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:28,748 INFO L225 Difference]: With dead ends: 296 [2021-05-02 18:52:28,748 INFO L226 Difference]: Without dead ends: 296 [2021-05-02 18:52:28,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6092 ImplicationChecksByTransitivity, 20694.0ms TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2021-05-02 18:52:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-05-02 18:52:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-05-02 18:52:28,751 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) [2021-05-02 18:52:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 331 transitions. [2021-05-02 18:52:28,752 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 331 transitions. Word has length 293 [2021-05-02 18:52:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:28,752 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 331 transitions. [2021-05-02 18:52:28,752 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) [2021-05-02 18:52:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 331 transitions. [2021-05-02 18:52:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-05-02 18:52:28,782 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:28,782 INFO L523 BasicCegarLoop]: trace histogram [141, 107, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:28,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-02 18:52:28,991 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:28,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:28,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1459695509, now seen corresponding path program 104 times [2021-05-02 18:52:28,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:28,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547228476] [2021-05-02 18:52:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:38,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 19882 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 18:52:38,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:38,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547228476] [2021-05-02 18:52:38,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547228476] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:38,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573171342] [2021-05-02 18:52:38,535 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 [2021-05-02 18:52:38,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:38,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:38,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-02 18:52:38,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:38,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:38,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 19882 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 18:52:39,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573171342] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:39,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:39,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 112 [2021-05-02 18:52:39,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444806122] [2021-05-02 18:52:39,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 18:52:39,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:39,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 18:52:39,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:52:39,797 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) [2021-05-02 18:52:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:51,006 INFO L93 Difference]: Finished difference Result 298 states and 333 transitions. [2021-05-02 18:52:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 18:52:51,007 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 [2021-05-02 18:52:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:51,008 INFO L225 Difference]: With dead ends: 298 [2021-05-02 18:52:51,008 INFO L226 Difference]: Without dead ends: 298 [2021-05-02 18:52:51,009 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 20070.7ms TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2021-05-02 18:52:51,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-05-02 18:52:51,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-05-02 18:52:51,011 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) [2021-05-02 18:52:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 333 transitions. [2021-05-02 18:52:51,011 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 333 transitions. Word has length 295 [2021-05-02 18:52:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:51,011 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 333 transitions. [2021-05-02 18:52:51,011 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) [2021-05-02 18:52:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 333 transitions. [2021-05-02 18:52:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-05-02 18:52:51,012 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:51,012 INFO L523 BasicCegarLoop]: trace histogram [142, 108, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:51,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:51,221 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:51,221 INFO L82 PathProgramCache]: Analyzing trace with hash 423336433, now seen corresponding path program 105 times [2021-05-02 18:52:51,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:51,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802473369] [2021-05-02 18:52:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 20165 backedges. 7303 proven. 11772 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 18:52:59,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:59,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802473369] [2021-05-02 18:52:59,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802473369] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:59,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824579238] [2021-05-02 18:52:59,074 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 [2021-05-02 18:52:59,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-02 18:52:59,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:59,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:52:59,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:59,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:00,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:04,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 20165 backedges. 7452 proven. 1156 refuted. 0 times theorem prover too weak. 11557 trivial. 0 not checked. [2021-05-02 18:53:05,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824579238] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:05,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:05,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 37] total 147 [2021-05-02 18:53:05,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646421346] [2021-05-02 18:53:05,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 147 states [2021-05-02 18:53:05,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:05,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2021-05-02 18:53:05,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 18:53:05,761 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) [2021-05-02 18:53:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:27,514 INFO L93 Difference]: Finished difference Result 303 states and 340 transitions. [2021-05-02 18:53:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2021-05-02 18:53:27,515 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 [2021-05-02 18:53:27,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:27,516 INFO L225 Difference]: With dead ends: 303 [2021-05-02 18:53:27,516 INFO L226 Difference]: Without dead ends: 303 [2021-05-02 18:53:27,519 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 33698.8ms TimeCoverageRelationStatistics Valid=31755, Invalid=52635, Unknown=0, NotChecked=0, Total=84390 [2021-05-02 18:53:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-05-02 18:53:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 302. [2021-05-02 18:53:27,521 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) [2021-05-02 18:53:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 338 transitions. [2021-05-02 18:53:27,522 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 338 transitions. Word has length 297 [2021-05-02 18:53:27,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:27,522 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 338 transitions. [2021-05-02 18:53:27,522 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) [2021-05-02 18:53:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 338 transitions. [2021-05-02 18:53:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-05-02 18:53:27,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:27,523 INFO L523 BasicCegarLoop]: trace histogram [144, 109, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:27,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:27,747 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:27,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1755440904, now seen corresponding path program 106 times [2021-05-02 18:53:27,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:27,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721321636] [2021-05-02 18:53:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:35,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 20737 backedges. 7590 proven. 11990 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-02 18:53:35,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:35,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721321636] [2021-05-02 18:53:35,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721321636] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:35,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325271401] [2021-05-02 18:53:35,737 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 [2021-05-02 18:53:35,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:53:35,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:35,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-02 18:53:35,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:35,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:35,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 20737 backedges. 7590 proven. 11990 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-05-02 18:53:36,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325271401] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:36,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:36,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 114 [2021-05-02 18:53:36,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887789064] [2021-05-02 18:53:36,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-02 18:53:36,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:36,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-02 18:53:36,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 18:53:36,963 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) [2021-05-02 18:53:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:50,596 INFO L93 Difference]: Finished difference Result 304 states and 340 transitions. [2021-05-02 18:53:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-02 18:53:50,598 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 [2021-05-02 18:53:50,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:50,598 INFO L225 Difference]: With dead ends: 304 [2021-05-02 18:53:50,598 INFO L226 Difference]: Without dead ends: 304 [2021-05-02 18:53:50,600 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6428 ImplicationChecksByTransitivity, 20631.5ms TimeCoverageRelationStatistics Valid=18761, Invalid=31191, Unknown=0, NotChecked=0, Total=49952 [2021-05-02 18:53:50,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-05-02 18:53:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-05-02 18:53:50,601 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) [2021-05-02 18:53:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 340 transitions. [2021-05-02 18:53:50,602 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 340 transitions. Word has length 301 [2021-05-02 18:53:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:50,602 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 340 transitions. [2021-05-02 18:53:50,602 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) [2021-05-02 18:53:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 340 transitions. [2021-05-02 18:53:50,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-05-02 18:53:50,603 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:50,603 INFO L523 BasicCegarLoop]: trace histogram [145, 110, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:50,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:50,813 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:50,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1856117860, now seen corresponding path program 107 times [2021-05-02 18:53:50,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:50,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146468788] [2021-05-02 18:53:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat