/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:50:51,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:50:51,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:50:51,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:50:51,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:50:51,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:50:51,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:50:51,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:50:51,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:50:51,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:50:51,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:50:51,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:50:51,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:50:51,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:50:51,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:50:51,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:50:51,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:50:51,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:50:51,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:50:51,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:50:51,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:50:51,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:50:51,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:50:51,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:50:51,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:50:51,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:50:51,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:50:51,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:50:51,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:50:51,606 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:50:51,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:50:51,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:50:51,608 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:50:51,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:50:51,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:50:51,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:50:51,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:50:51,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:50:51,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:50:51,613 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:50:51,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:50:51,613 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:50:51,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:50:51,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:50:51,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:50:51,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:50:51,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:50:51,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:50:51,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:50:51,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:50:51,623 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:50:51,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:50:51,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:50:51,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:50:51,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:50:51,923 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:50:51,923 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:50:51,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_3.c [2021-05-02 18:50:51,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a039469/f0d49b301d3f458d99642a56f3140460/FLAGc00095065 [2021-05-02 18:50:52,400 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:50:52,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_3.c [2021-05-02 18:50:52,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a039469/f0d49b301d3f458d99642a56f3140460/FLAGc00095065 [2021-05-02 18:50:52,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a039469/f0d49b301d3f458d99642a56f3140460 [2021-05-02 18:50:52,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:50:52,420 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:50:52,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:50:52,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:50:52,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:50:52,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:50:52" (1/1) ... [2021-05-02 18:50:52,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7f2308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52, skipping insertion in model container [2021-05-02 18:50:52,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:50:52" (1/1) ... [2021-05-02 18:50:52,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:50:52,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:50:52,520 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_3.c[318,331] [2021-05-02 18:50:52,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:50:52,534 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:50:52,542 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_3.c[318,331] [2021-05-02 18:50:52,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:50:52,554 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:50:52,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52 WrapperNode [2021-05-02 18:50:52,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:50:52,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:50:52,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:50:52,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:50:52,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52" (1/1) ... [2021-05-02 18:50:52,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52" (1/1) ... [2021-05-02 18:50:52,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52" (1/1) ... [2021-05-02 18:50:52,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52" (1/1) ... [2021-05-02 18:50:52,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52" (1/1) ... [2021-05-02 18:50:52,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52" (1/1) ... [2021-05-02 18:50:52,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52" (1/1) ... [2021-05-02 18:50:52,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:50:52,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:50:52,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:50:52,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:50:52,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52" (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 18:50:52,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:50:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:50:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:50:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:50:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:50:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:50:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:50:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:50:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:50:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:50:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:50:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:50:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:50:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:50:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:50:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:50:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:50:53,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:50:53,004 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 18:50:53,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:50:53 BoogieIcfgContainer [2021-05-02 18:50:53,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:50:53,005 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:50:53,005 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:50:53,006 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:50:53,008 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:50:53" (1/1) ... [2021-05-02 18:50:53,114 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< 0 v_main_~y~0_2) InVars {main_~y~0=v_main_~y~0_2} OutVars{main_~y~0=v_main_~y~0_2} AuxVars[] AssignedVars[] [2021-05-02 18:50:53,146 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.8 percent of original size [2021-05-02 18:50:53,271 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.8 percent of original size 67 [2021-05-02 18:50:53,317 INFO L1112 elerationTransformer]: Accelerated Formula: (and (= v_main_~y~0_1 (+ v_main_~y~0_2 (- 2))) (= v_main_~x~0_3 (+ v_main_~x~0_2 1)) (< 0 v_main_~y~0_2) (= v_main_~z~0_1 (+ v_main_~z~0_2 1))) InVars {main_~x~0=v_main_~x~0_3, main_~z~0=v_main_~z~0_2, main_~y~0=v_main_~y~0_2} OutVars{main_#t~post10=|v_main_#t~post10_1|, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_1, main_~y~0=v_main_~y~0_1, main_#t~post11=|v_main_#t~post11_1|} AuxVars[] AssignedVars[main_#t~post10, main_~x~0, main_~z~0, main_~y~0, main_#t~post11] 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_~y~0_2 0) (= |v_main_#t~post10_3| |v_main_#t~post10_1|) (= v_main_~z~0_2 v_main_~z~0_1)) (let ((.cse0 (* 2 v_itFin_1))) (and (<= v_main_~y~0_2 .cse0) (= v_main_~x~0_3 (+ v_itFin_1 v_main_~x~0_2)) (< v_itFin_1 (+ (div (+ v_main_~y~0_2 (- 1)) 2) 2)) (= (+ v_itFin_1 v_main_~z~0_2) v_main_~z~0_1) (= v_main_~y~0_2 (+ .cse0 v_main_~y~0_1)) (< 0 v_main_~y~0_2)))) InVars {main_~y~0=v_main_~y~0_2, main_#t~post10=|v_main_#t~post10_3|, main_~x~0=v_main_~x~0_3, main_#t~post11=|v_main_#t~post11_3|, main_~z~0=v_main_~z~0_2} OutVars{main_~y~0=v_main_~y~0_1, main_#t~post10=|v_main_#t~post10_1|, main_~x~0=v_main_~x~0_2, main_#t~post11=|v_main_#t~post11_1|, main_~z~0=v_main_~z~0_1} AuxVars[v_itFin_1] AssignedVars[main_#t~post10, main_~x~0, main_~z~0, main_~y~0, main_#t~post11] [2021-05-02 18:50:53,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:50:53 BasicIcfg [2021-05-02 18:50:53,326 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:50:53,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:50:53,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:50:53,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:50:53,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:50:52" (1/4) ... [2021-05-02 18:50:53,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3242e21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:50:53, skipping insertion in model container [2021-05-02 18:50:53,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:50:52" (2/4) ... [2021-05-02 18:50:53,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3242e21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:50:53, skipping insertion in model container [2021-05-02 18:50:53,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:50:53" (3/4) ... [2021-05-02 18:50:53,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3242e21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:50:53, skipping insertion in model container [2021-05-02 18:50:53,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:50:53" (4/4) ... [2021-05-02 18:50:53,335 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_3.cJordan [2021-05-02 18:50:53,339 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:50:53,343 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:50:53,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:50:53,380 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:50:53,381 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:50:53,381 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:50:53,381 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:50:53,381 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:50:53,381 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:50:53,381 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:50:53,381 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:50:53,394 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 18:50:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:50:53,400 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:53,400 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:53,401 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:53,405 INFO L82 PathProgramCache]: Analyzing trace with hash 164364990, now seen corresponding path program 1 times [2021-05-02 18:50:53,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:53,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581750957] [2021-05-02 18:50:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:53,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:53,536 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 18:50:53,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:53,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581750957] [2021-05-02 18:50:53,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581750957] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:50:53,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:50:53,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:50:53,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518651781] [2021-05-02 18:50:53,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:50:53,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:53,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:50:53,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:50:53,552 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 18:50:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:53,606 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-02 18:50:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:50:53,608 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 18:50:53,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:53,612 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:50:53,613 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 18:50:53,613 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:50:53,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 18:50:53,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 18:50:53,631 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 18:50:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-05-02 18:50:53,632 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-05-02 18:50:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:53,633 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-05-02 18:50:53,633 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 18:50:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-05-02 18:50:53,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:50:53,633 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:53,633 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:53,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:50:53,634 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:53,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:53,634 INFO L82 PathProgramCache]: Analyzing trace with hash 165288511, now seen corresponding path program 1 times [2021-05-02 18:50:53,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:53,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868210182] [2021-05-02 18:50:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:53,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:53,694 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 18:50:53,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:53,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868210182] [2021-05-02 18:50:53,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868210182] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:50:53,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:50:53,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:50:53,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190429179] [2021-05-02 18:50:53,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:50:53,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:53,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:50:53,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:50:53,697 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 18:50:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:53,744 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-05-02 18:50:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:50:53,745 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 18:50:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:53,745 INFO L225 Difference]: With dead ends: 16 [2021-05-02 18:50:53,745 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 18:50:53,746 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:50:53,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 18:50:53,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 18:50:53,748 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 18:50:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-02 18:50:53,749 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-05-02 18:50:53,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:53,749 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-02 18:50:53,749 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 18:50:53,749 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-02 18:50:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 18:50:53,750 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:53,750 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:53,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:50:53,750 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:53,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1054746269, now seen corresponding path program 1 times [2021-05-02 18:50:53,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:53,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263861640] [2021-05-02 18:50:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:53,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:53,796 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 18:50:53,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:53,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263861640] [2021-05-02 18:50:53,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263861640] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:50:53,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:50:53,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:50:53,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064605020] [2021-05-02 18:50:53,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:50:53,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:53,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:50:53,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:50:53,798 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 18:50:53,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:53,832 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-05-02 18:50:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:50:53,832 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 18:50:53,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:53,833 INFO L225 Difference]: With dead ends: 17 [2021-05-02 18:50:53,833 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:50:53,833 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:50:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:50:53,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 18:50:53,835 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 18:50:53,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 18:50:53,835 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-02 18:50:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:53,836 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 18:50:53,836 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 18:50:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 18:50:53,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:50:53,836 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:53,836 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:53,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 18:50:53,837 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:53,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1687477607, now seen corresponding path program 1 times [2021-05-02 18:50:53,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:53,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369639438] [2021-05-02 18:50:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:53,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:53,885 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 18:50:53,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:53,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369639438] [2021-05-02 18:50:53,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369639438] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:53,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576646361] [2021-05-02 18:50:53,886 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 18:50:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:54,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 18:50:54,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:54,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:54,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:54,048 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 18:50:54,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576646361] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:54,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:54,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 18:50:54,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690643931] [2021-05-02 18:50:54,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:50:54,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:54,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:50:54,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:50:54,051 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 18:50:54,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:54,131 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-02 18:50:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:50:54,131 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 18:50:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:54,132 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:50:54,132 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 18:50:54,132 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:50:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 18:50:54,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 18:50:54,134 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 18:50:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 18:50:54,134 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-05-02 18:50:54,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:54,135 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 18:50:54,135 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 18:50:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 18:50:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:50:54,135 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:54,135 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:54,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:54,341 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:54,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:54,342 INFO L82 PathProgramCache]: Analyzing trace with hash -355394621, now seen corresponding path program 2 times [2021-05-02 18:50:54,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:54,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691732136] [2021-05-02 18:50:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:54,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:54,405 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 18:50:54,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:54,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691732136] [2021-05-02 18:50:54,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691732136] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:50:54,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:50:54,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:50:54,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965935838] [2021-05-02 18:50:54,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:50:54,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:54,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:50:54,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:50:54,408 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 18:50:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:54,448 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-05-02 18:50:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:50:54,449 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 18:50:54,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:54,449 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:50:54,449 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 18:50:54,450 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:50:54,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 18:50:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-02 18:50:54,451 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 18:50:54,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-05-02 18:50:54,452 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2021-05-02 18:50:54,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:54,452 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-05-02 18:50:54,452 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 18:50:54,452 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-05-02 18:50:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 18:50:54,453 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:54,453 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:54,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 18:50:54,453 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:54,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:54,454 INFO L82 PathProgramCache]: Analyzing trace with hash 987258878, now seen corresponding path program 1 times [2021-05-02 18:50:54,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:54,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597251456] [2021-05-02 18:50:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:54,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:54,544 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 18:50:54,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:54,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597251456] [2021-05-02 18:50:54,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597251456] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:54,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416719814] [2021-05-02 18:50:54,545 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 18:50:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:54,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:50:54,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:54,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:54,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:54,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:54,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:54,704 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 18:50:54,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416719814] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:54,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:54,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-02 18:50:54,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101739170] [2021-05-02 18:50:54,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 18:50:54,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:54,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 18:50:54,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:50:54,706 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 18:50:54,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:54,803 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-02 18:50:54,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 18:50:54,803 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 18:50:54,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:54,804 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:50:54,804 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 18:50:54,804 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:50:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 18:50:54,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-02 18:50:54,806 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 18:50:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-05-02 18:50:54,806 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-05-02 18:50:54,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:54,806 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-05-02 18:50:54,806 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 18:50:54,807 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-05-02 18:50:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 18:50:54,807 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:54,807 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:55,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:55,024 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:55,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1311371174, now seen corresponding path program 2 times [2021-05-02 18:50:55,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:55,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289814034] [2021-05-02 18:50:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:55,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:55,097 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 18:50:55,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:55,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289814034] [2021-05-02 18:50:55,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289814034] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:55,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074745315] [2021-05-02 18:50:55,098 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 18:50:55,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:50:55,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:55,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:50:55,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:55,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:55,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:55,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:55,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:55,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:55,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:55,219 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 18:50:55,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074745315] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:55,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:55,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 18:50:55,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560369306] [2021-05-02 18:50:55,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:50:55,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:55,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:50:55,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:50:55,221 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 18:50:55,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:55,358 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-02 18:50:55,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:50:55,359 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 18:50:55,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:55,360 INFO L225 Difference]: With dead ends: 24 [2021-05-02 18:50:55,360 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 18:50:55,361 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:50:55,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 18:50:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 18:50:55,368 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 18:50:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 18:50:55,373 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-05-02 18:50:55,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:55,374 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 18:50:55,374 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 18:50:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 18:50:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 18:50:55,375 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:55,375 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:55,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:55,594 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:55,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:55,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1613306294, now seen corresponding path program 3 times [2021-05-02 18:50:55,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:55,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788695915] [2021-05-02 18:50:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:55,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:55,693 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 18:50:55,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:55,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788695915] [2021-05-02 18:50:55,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788695915] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:55,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352472426] [2021-05-02 18:50:55,694 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 18:50:55,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 18:50:55,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:55,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:50:55,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:55,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:55,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:55,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:55,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:55,807 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 18:50:55,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352472426] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:55,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:55,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-05-02 18:50:55,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12972155] [2021-05-02 18:50:55,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:50:55,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:55,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:50:55,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:50:55,808 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 18:50:55,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:55,980 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-05-02 18:50:55,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:50:55,980 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 18:50:55,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:55,982 INFO L225 Difference]: With dead ends: 29 [2021-05-02 18:50:55,982 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 18:50:55,982 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 184.8ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:50:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 18:50:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-02 18:50:55,984 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 18:50:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-02 18:50:55,985 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-05-02 18:50:55,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:55,985 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-02 18:50:55,985 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 18:50:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-02 18:50:55,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 18:50:55,986 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:55,986 INFO L523 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:56,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:56,203 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:56,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:56,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053811, now seen corresponding path program 4 times [2021-05-02 18:50:56,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:56,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439787231] [2021-05-02 18:50:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:56,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:56,270 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 18:50:56,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:56,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439787231] [2021-05-02 18:50:56,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439787231] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:56,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991388723] [2021-05-02 18:50:56,271 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 18:50:56,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:50:56,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:56,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:50:56,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:56,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,367 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 18:50:56,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991388723] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:56,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:56,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 18:50:56,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240320457] [2021-05-02 18:50:56,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:50:56,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:56,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:50:56,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:50:56,369 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 18:50:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:56,538 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-02 18:50:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:50:56,538 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 18:50:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:56,539 INFO L225 Difference]: With dead ends: 30 [2021-05-02 18:50:56,539 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 18:50:56,539 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 156.6ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:50:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 18:50:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 18:50:56,541 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 18:50:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-02 18:50:56,541 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2021-05-02 18:50:56,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:56,542 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-02 18:50:56,542 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 18:50:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-02 18:50:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 18:50:56,542 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:56,542 INFO L523 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:56,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:56,759 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:56,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:56,759 INFO L82 PathProgramCache]: Analyzing trace with hash 163921129, now seen corresponding path program 5 times [2021-05-02 18:50:56,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:56,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472180462] [2021-05-02 18:50:56,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:56,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:56,828 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 18:50:56,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:56,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472180462] [2021-05-02 18:50:56,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472180462] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:56,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569357696] [2021-05-02 18:50:56,829 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 18:50:56,921 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-05-02 18:50:56,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:56,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:50:56,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:56,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:56,993 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 18:50:56,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569357696] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:56,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:56,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-02 18:50:56,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663739563] [2021-05-02 18:50:56,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:50:56,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:56,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:50:56,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:50:56,994 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 18:50:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:57,182 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-02 18:50:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:50:57,182 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 18:50:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:57,183 INFO L225 Difference]: With dead ends: 32 [2021-05-02 18:50:57,183 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 18:50:57,184 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 165.4ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:50:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 18:50:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 18:50:57,188 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 18:50:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-05-02 18:50:57,191 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2021-05-02 18:50:57,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:57,191 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-05-02 18:50:57,192 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 18:50:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-05-02 18:50:57,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 18:50:57,194 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:57,194 INFO L523 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:57,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:57,395 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:57,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:57,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1704405573, now seen corresponding path program 6 times [2021-05-02 18:50:57,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:57,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534661185] [2021-05-02 18:50:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:57,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:57,518 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 18:50:57,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:57,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534661185] [2021-05-02 18:50:57,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534661185] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:57,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950011175] [2021-05-02 18:50:57,518 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 18:50:57,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-02 18:50:57,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:57,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:50:57,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:57,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:57,731 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 18:50:57,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950011175] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:57,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:57,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2021-05-02 18:50:57,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009566721] [2021-05-02 18:50:57,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:50:57,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:57,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:50:57,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:50:57,733 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 18:50:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:57,979 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-02 18:50:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 18:50:57,980 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 18:50:57,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:57,980 INFO L225 Difference]: With dead ends: 38 [2021-05-02 18:50:57,980 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 18:50:57,981 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 282.0ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:50:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 18:50:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 18:50:57,982 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 18:50:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-02 18:50:57,983 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 31 [2021-05-02 18:50:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:57,983 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-02 18:50:57,983 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 18:50:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-02 18:50:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 18:50:57,983 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:57,983 INFO L523 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:58,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:58,200 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:58,201 INFO L82 PathProgramCache]: Analyzing trace with hash -747599783, now seen corresponding path program 7 times [2021-05-02 18:50:58,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:58,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650625010] [2021-05-02 18:50:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:58,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:58,301 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 18:50:58,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:58,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650625010] [2021-05-02 18:50:58,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650625010] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:58,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908489799] [2021-05-02 18:50:58,301 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 18:50:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:58,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:50:58,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:58,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:58,442 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 18:50:58,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908489799] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:58,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:58,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-02 18:50:58,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358291341] [2021-05-02 18:50:58,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:50:58,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:58,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:50:58,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:50:58,444 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 18:50:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:58,747 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-05-02 18:50:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:50:58,747 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 18:50:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:58,748 INFO L225 Difference]: With dead ends: 40 [2021-05-02 18:50:58,748 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 18:50:58,748 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 301.3ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:50:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 18:50:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-02 18:50:58,750 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 18:50:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-02 18:50:58,750 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 37 [2021-05-02 18:50:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:58,750 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-02 18:50:58,750 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 18:50:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-02 18:50:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 18:50:58,751 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:58,751 INFO L523 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:58,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 18:50:58,967 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:58,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1906137525, now seen corresponding path program 8 times [2021-05-02 18:50:58,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:58,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269510354] [2021-05-02 18:50:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:59,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:59,071 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 18:50:59,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:59,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269510354] [2021-05-02 18:50:59,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269510354] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:59,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766773934] [2021-05-02 18:50:59,071 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 18:50:59,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:50:59,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:59,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:50:59,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:59,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,183 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 18:50:59,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766773934] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:59,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:50:59,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 18:50:59,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817309877] [2021-05-02 18:50:59,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:50:59,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:50:59,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:50:59,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:50:59,185 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 18:50:59,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:50:59,530 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-02 18:50:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:50:59,531 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 18:50:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:50:59,531 INFO L225 Difference]: With dead ends: 42 [2021-05-02 18:50:59,531 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 18:50:59,532 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 330.9ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:50:59,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 18:50:59,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 18:50:59,533 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 18:50:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-05-02 18:50:59,534 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 39 [2021-05-02 18:50:59,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:50:59,534 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-05-02 18:50:59,534 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 18:50:59,534 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-05-02 18:50:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 18:50:59,534 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:50:59,534 INFO L523 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:50:59,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:50:59,752 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:50:59,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:50:59,752 INFO L82 PathProgramCache]: Analyzing trace with hash 937116689, now seen corresponding path program 9 times [2021-05-02 18:50:59,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:50:59,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334369458] [2021-05-02 18:50:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:50:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:50:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:50:59,867 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 18:50:59,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:50:59,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334369458] [2021-05-02 18:50:59,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334369458] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:50:59,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608743524] [2021-05-02 18:50:59,868 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 18:50:59,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 18:50:59,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:50:59,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:50:59,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:50:59,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:50:59,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,009 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 18:51:00,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608743524] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:00,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:00,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2021-05-02 18:51:00,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892165739] [2021-05-02 18:51:00,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:51:00,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:00,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:51:00,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:51:00,011 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 18:51:00,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:00,487 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-05-02 18:51:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 18:51:00,487 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 18:51:00,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:00,488 INFO L225 Difference]: With dead ends: 47 [2021-05-02 18:51:00,488 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 18:51:00,489 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 493.6ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:51:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 18:51:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-02 18:51:00,490 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 18:51:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-02 18:51:00,490 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 41 [2021-05-02 18:51:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:00,491 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-02 18:51:00,491 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 18:51:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-02 18:51:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 18:51:00,491 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:00,491 INFO L523 BasicCegarLoop]: trace histogram [16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:00,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:00,707 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:00,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:00,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1270675160, now seen corresponding path program 10 times [2021-05-02 18:51:00,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:00,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309825383] [2021-05-02 18:51:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:00,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:00,834 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 18:51:00,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:00,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309825383] [2021-05-02 18:51:00,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309825383] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:00,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567784263] [2021-05-02 18:51:00,835 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 18:51:00,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:00,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:00,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:51:00,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:00,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:00,956 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 18:51:00,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567784263] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:00,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:00,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 18:51:00,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620159905] [2021-05-02 18:51:00,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 18:51:00,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:00,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 18:51:00,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:51:00,957 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 18:51:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:01,366 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-05-02 18:51:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 18:51:01,367 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 18:51:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:01,367 INFO L225 Difference]: With dead ends: 48 [2021-05-02 18:51:01,367 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 18:51:01,368 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 404.9ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:51:01,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 18:51:01,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 18:51:01,369 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 18:51:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-05-02 18:51:01,370 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 45 [2021-05-02 18:51:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:01,370 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-05-02 18:51:01,370 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 18:51:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-05-02 18:51:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 18:51:01,370 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:01,371 INFO L523 BasicCegarLoop]: trace histogram [17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:01,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 18:51:01,586 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:01,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1918452092, now seen corresponding path program 11 times [2021-05-02 18:51:01,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:01,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4819039] [2021-05-02 18:51:01,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:01,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:01,756 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 18:51:01,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:01,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4819039] [2021-05-02 18:51:01,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4819039] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:01,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745728600] [2021-05-02 18:51:01,756 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 18:51:01,834 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 18:51:01,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:01,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:51:01,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:01,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:01,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:02,014 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 18:51:02,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745728600] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:02,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:02,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-02 18:51:02,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24664478] [2021-05-02 18:51:02,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:51:02,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:02,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:51:02,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:51:02,016 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 18:51:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:02,633 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-02 18:51:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 18:51:02,633 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 18:51:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:02,634 INFO L225 Difference]: With dead ends: 50 [2021-05-02 18:51:02,634 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 18:51:02,634 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 604.1ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:51:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 18:51:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-02 18:51:02,652 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 18:51:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-05-02 18:51:02,652 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 47 [2021-05-02 18:51:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:02,654 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-05-02 18:51:02,654 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 18:51:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-05-02 18:51:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 18:51:02,656 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:02,656 INFO L523 BasicCegarLoop]: trace histogram [18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:02,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 18:51:02,873 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:02,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:02,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1661825824, now seen corresponding path program 12 times [2021-05-02 18:51:02,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:02,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011360950] [2021-05-02 18:51:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:03,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:03,099 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 18:51:03,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:03,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011360950] [2021-05-02 18:51:03,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011360950] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:03,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096236894] [2021-05-02 18:51:03,099 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 18:51:03,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-02 18:51:03,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:03,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 18:51:03,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:03,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:03,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:03,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:03,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:03,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:03,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:03,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:03,404 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 18:51:03,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096236894] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:03,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:03,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2021-05-02 18:51:03,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91237943] [2021-05-02 18:51:03,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 18:51:03,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:03,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 18:51:03,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:51:03,405 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 18:51:04,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:04,084 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-05-02 18:51:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:51:04,085 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 18:51:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:04,085 INFO L225 Difference]: With dead ends: 55 [2021-05-02 18:51:04,085 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 18:51:04,086 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 796.6ms TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:51:04,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 18:51:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-02 18:51:04,097 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 18:51:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-05-02 18:51:04,099 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 49 [2021-05-02 18:51:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:04,099 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-05-02 18:51:04,099 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 18:51:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-05-02 18:51:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 18:51:04,115 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:04,115 INFO L523 BasicCegarLoop]: trace histogram [20, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:04,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 18:51:04,331 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:04,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1205387721, now seen corresponding path program 13 times [2021-05-02 18:51:04,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:04,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102274569] [2021-05-02 18:51:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:04,573 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 18:51:04,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:04,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102274569] [2021-05-02 18:51:04,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102274569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:04,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266420301] [2021-05-02 18:51:04,574 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 18:51:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:04,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:51:04,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:04,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:04,801 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 18:51:04,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266420301] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:04,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:04,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-02 18:51:04,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656599591] [2021-05-02 18:51:04,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 18:51:04,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:04,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 18:51:04,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:51:04,816 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 18:51:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:05,406 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-02 18:51:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 18:51:05,407 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 18:51:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:05,407 INFO L225 Difference]: With dead ends: 56 [2021-05-02 18:51:05,407 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 18:51:05,408 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 621.3ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:51:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 18:51:05,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 18:51:05,426 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 18:51:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-02 18:51:05,427 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 53 [2021-05-02 18:51:05,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:05,427 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-02 18:51:05,427 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 18:51:05,427 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-02 18:51:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 18:51:05,427 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:05,427 INFO L523 BasicCegarLoop]: trace histogram [21, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:05,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:05,645 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:05,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:05,645 INFO L82 PathProgramCache]: Analyzing trace with hash 698210195, now seen corresponding path program 14 times [2021-05-02 18:51:05,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:05,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074873558] [2021-05-02 18:51:05,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:05,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:05,885 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 18:51:05,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:05,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074873558] [2021-05-02 18:51:05,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074873558] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:05,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237964701] [2021-05-02 18:51:05,885 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 18:51:05,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:05,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:05,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:51:05,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:05,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:06,134 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 18:51:06,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237964701] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:06,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:06,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 18:51:06,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164924408] [2021-05-02 18:51:06,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 18:51:06,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:06,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 18:51:06,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:51:06,136 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 18:51:06,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:06,725 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-05-02 18:51:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:51:06,726 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 18:51:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:06,726 INFO L225 Difference]: With dead ends: 58 [2021-05-02 18:51:06,726 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 18:51:06,727 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 653.9ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:51:06,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 18:51:06,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-02 18:51:06,734 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 18:51:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2021-05-02 18:51:06,735 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 55 [2021-05-02 18:51:06,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:06,735 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2021-05-02 18:51:06,735 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 18:51:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2021-05-02 18:51:06,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 18:51:06,736 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:06,736 INFO L523 BasicCegarLoop]: trace histogram [22, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:06,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:06,953 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:06,953 INFO L82 PathProgramCache]: Analyzing trace with hash 399739375, now seen corresponding path program 15 times [2021-05-02 18:51:06,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:06,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734211543] [2021-05-02 18:51:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:07,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:07,245 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 18:51:07,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:07,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734211543] [2021-05-02 18:51:07,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734211543] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:07,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554258518] [2021-05-02 18:51:07,246 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 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 18:51:07,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 18:51:07,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:07,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:51:07,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:07,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:07,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:07,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:07,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:07,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:07,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:07,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:07,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:07,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:07,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:07,582 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 18:51:07,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554258518] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:07,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:07,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 27 [2021-05-02 18:51:07,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547155134] [2021-05-02 18:51:07,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:51:07,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:07,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:51:07,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:51:07,584 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 18:51:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:08,726 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-05-02 18:51:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:51:08,726 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 18:51:08,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:08,727 INFO L225 Difference]: With dead ends: 63 [2021-05-02 18:51:08,727 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 18:51:08,728 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1222.3ms TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:51:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 18:51:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-02 18:51:08,730 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 18:51:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-05-02 18:51:08,730 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 57 [2021-05-02 18:51:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:08,730 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-05-02 18:51:08,730 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 18:51:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-05-02 18:51:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 18:51:08,731 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:08,731 INFO L523 BasicCegarLoop]: trace histogram [24, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:08,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:08,947 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:08,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash -837478522, now seen corresponding path program 16 times [2021-05-02 18:51:08,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:08,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320571431] [2021-05-02 18:51:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:09,163 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 18:51:09,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:09,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320571431] [2021-05-02 18:51:09,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320571431] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:09,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944776001] [2021-05-02 18:51:09,163 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 18:51:09,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:09,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:09,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:51:09,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:09,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:09,309 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 18:51:09,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944776001] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:09,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:09,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-02 18:51:09,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773801111] [2021-05-02 18:51:09,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 18:51:09,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:09,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 18:51:09,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:51:09,310 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 18:51:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:09,913 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-05-02 18:51:09,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:51:09,913 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 18:51:09,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:09,914 INFO L225 Difference]: With dead ends: 64 [2021-05-02 18:51:09,914 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 18:51:09,914 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 670.9ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:51:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 18:51:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 18:51:09,915 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 18:51:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-05-02 18:51:09,916 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 61 [2021-05-02 18:51:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:09,916 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-05-02 18:51:09,916 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 18:51:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-05-02 18:51:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 18:51:09,916 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:09,916 INFO L523 BasicCegarLoop]: trace histogram [25, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:10,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 18:51:10,129 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:10,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:10,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1736796958, now seen corresponding path program 17 times [2021-05-02 18:51:10,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:10,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653215530] [2021-05-02 18:51:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:10,344 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 18:51:10,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:10,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653215530] [2021-05-02 18:51:10,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653215530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:10,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462684165] [2021-05-02 18:51:10,344 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 18:51:10,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-02 18:51:10,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:10,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:51:10,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:10,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:10,484 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 18:51:10,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462684165] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:10,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:10,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-02 18:51:10,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597904562] [2021-05-02 18:51:10,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 18:51:10,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:10,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 18:51:10,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:51:10,485 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 18:51:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:11,098 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-05-02 18:51:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 18:51:11,098 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 18:51:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:11,099 INFO L225 Difference]: With dead ends: 66 [2021-05-02 18:51:11,099 INFO L226 Difference]: Without dead ends: 66 [2021-05-02 18:51:11,099 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 708.0ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:51:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-02 18:51:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-02 18:51:11,100 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 18:51:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-05-02 18:51:11,101 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 63 [2021-05-02 18:51:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:11,101 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-05-02 18:51:11,101 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 18:51:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-05-02 18:51:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 18:51:11,101 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:11,101 INFO L523 BasicCegarLoop]: trace histogram [26, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:11,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 18:51:11,307 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:11,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:11,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1601579838, now seen corresponding path program 18 times [2021-05-02 18:51:11,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:11,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966401794] [2021-05-02 18:51:11,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:11,564 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 18:51:11,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:11,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966401794] [2021-05-02 18:51:11,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966401794] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:11,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483175170] [2021-05-02 18:51:11,565 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 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 18:51:11,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-02 18:51:11,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:11,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:51:11,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:11,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:11,843 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 18:51:11,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483175170] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:11,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:11,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2021-05-02 18:51:11,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197907136] [2021-05-02 18:51:11,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:51:11,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:11,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:51:11,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:51:11,845 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 18:51:12,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:12,784 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-05-02 18:51:12,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 18:51:12,785 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 18:51:12,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:12,785 INFO L225 Difference]: With dead ends: 71 [2021-05-02 18:51:12,785 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 18:51:12,786 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1120.3ms TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:51:12,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 18:51:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-02 18:51:12,787 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 18:51:12,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-05-02 18:51:12,788 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 65 [2021-05-02 18:51:12,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:12,788 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-05-02 18:51:12,788 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 18:51:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-05-02 18:51:12,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 18:51:12,788 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:12,789 INFO L523 BasicCegarLoop]: trace histogram [28, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:13,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 18:51:13,005 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:13,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:13,005 INFO L82 PathProgramCache]: Analyzing trace with hash 852002069, now seen corresponding path program 19 times [2021-05-02 18:51:13,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:13,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022732175] [2021-05-02 18:51:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,253 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 18:51:13,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:13,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022732175] [2021-05-02 18:51:13,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022732175] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:13,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539796813] [2021-05-02 18:51:13,254 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 18:51:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:51:13,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:13,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,436 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 18:51:13,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539796813] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:13,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:13,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-02 18:51:13,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533298810] [2021-05-02 18:51:13,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:51:13,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:13,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:51:13,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:51:13,438 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 18:51:14,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:14,163 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-05-02 18:51:14,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 18:51:14,164 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 18:51:14,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:14,164 INFO L225 Difference]: With dead ends: 72 [2021-05-02 18:51:14,164 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 18:51:14,165 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 820.2ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:51:14,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 18:51:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-02 18:51:14,166 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 18:51:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-05-02 18:51:14,166 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 69 [2021-05-02 18:51:14,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:14,166 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-05-02 18:51:14,167 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 18:51:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-05-02 18:51:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 18:51:14,167 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:14,167 INFO L523 BasicCegarLoop]: trace histogram [29, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:14,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 18:51:14,383 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:14,383 INFO L82 PathProgramCache]: Analyzing trace with hash 2063132273, now seen corresponding path program 20 times [2021-05-02 18:51:14,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:14,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333349408] [2021-05-02 18:51:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:14,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:14,639 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 18:51:14,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:14,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333349408] [2021-05-02 18:51:14,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333349408] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:14,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667035225] [2021-05-02 18:51:14,639 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 18:51:14,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:14,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:14,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:51:14,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:14,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,886 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 18:51:14,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667035225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:14,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:14,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 18:51:14,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884929362] [2021-05-02 18:51:14,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 18:51:14,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:14,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 18:51:14,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:51:14,888 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 18:51:15,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:15,601 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-02 18:51:15,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:51:15,601 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 18:51:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:15,602 INFO L225 Difference]: With dead ends: 74 [2021-05-02 18:51:15,602 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 18:51:15,603 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 768.2ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:51:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 18:51:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-02 18:51:15,604 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 18:51:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-02 18:51:15,604 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 71 [2021-05-02 18:51:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:15,604 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-02 18:51:15,605 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 18:51:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-02 18:51:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 18:51:15,605 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:15,605 INFO L523 BasicCegarLoop]: trace histogram [30, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:15,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 18:51:15,809 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:15,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:15,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2023121101, now seen corresponding path program 21 times [2021-05-02 18:51:15,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:15,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214881731] [2021-05-02 18:51:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:16,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:16,065 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 18:51:16,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:16,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214881731] [2021-05-02 18:51:16,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214881731] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:16,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931455004] [2021-05-02 18:51:16,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 18:51:16,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-02 18:51:16,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:16,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 18:51:16,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:16,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,365 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 18:51:16,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931455004] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:16,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:16,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2021-05-02 18:51:16,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375404745] [2021-05-02 18:51:16,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 18:51:16,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:16,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 18:51:16,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:51:16,367 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 18:51:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:17,511 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-05-02 18:51:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:51:17,511 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 18:51:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:17,512 INFO L225 Difference]: With dead ends: 79 [2021-05-02 18:51:17,512 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 18:51:17,513 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1341.3ms TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:51:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 18:51:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-02 18:51:17,514 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 18:51:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-05-02 18:51:17,514 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 73 [2021-05-02 18:51:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:17,515 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-05-02 18:51:17,515 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 18:51:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-05-02 18:51:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 18:51:17,515 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:17,515 INFO L523 BasicCegarLoop]: trace histogram [32, 25, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:17,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:17,731 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:17,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:17,731 INFO L82 PathProgramCache]: Analyzing trace with hash 264337124, now seen corresponding path program 22 times [2021-05-02 18:51:17,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:17,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620529229] [2021-05-02 18:51:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:18,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:18,044 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 18:51:18,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:18,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620529229] [2021-05-02 18:51:18,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620529229] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:18,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499772608] [2021-05-02 18:51:18,045 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 18:51:18,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:18,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:18,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:51:18,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:18,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,208 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 18:51:18,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499772608] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:18,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:18,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-02 18:51:18,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352028625] [2021-05-02 18:51:18,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 18:51:18,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:18,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 18:51:18,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:51:18,211 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 18:51:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:19,116 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-05-02 18:51:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 18:51:19,117 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 18:51:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:19,117 INFO L225 Difference]: With dead ends: 80 [2021-05-02 18:51:19,117 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 18:51:19,118 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1028.2ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:51:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 18:51:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-02 18:51:19,119 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 18:51:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-05-02 18:51:19,119 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 77 [2021-05-02 18:51:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:19,119 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-05-02 18:51:19,120 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 18:51:19,120 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-05-02 18:51:19,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 18:51:19,120 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:19,120 INFO L523 BasicCegarLoop]: trace histogram [33, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:19,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 18:51:19,325 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:19,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:19,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1587067968, now seen corresponding path program 23 times [2021-05-02 18:51:19,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:19,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114416688] [2021-05-02 18:51:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:19,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:19,674 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 18:51:19,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:19,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114416688] [2021-05-02 18:51:19,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114416688] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:19,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268313652] [2021-05-02 18:51:19,675 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 18:51:19,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-02 18:51:19,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:19,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:51:19,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:19,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,885 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 18:51:19,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268313652] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:19,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:19,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-02 18:51:19,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134474021] [2021-05-02 18:51:19,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:51:19,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:19,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:51:19,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:51:19,887 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 18:51:20,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:20,834 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-05-02 18:51:20,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 18:51:20,835 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 18:51:20,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:20,835 INFO L225 Difference]: With dead ends: 82 [2021-05-02 18:51:20,835 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 18:51:20,836 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1081.2ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:51:20,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 18:51:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-02 18:51:20,837 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 18:51:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-05-02 18:51:20,838 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 79 [2021-05-02 18:51:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:20,838 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-05-02 18:51:20,838 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 18:51:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-05-02 18:51:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 18:51:20,838 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:20,838 INFO L523 BasicCegarLoop]: trace histogram [34, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:21,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:21,054 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:21,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:21,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1421089436, now seen corresponding path program 24 times [2021-05-02 18:51:21,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:21,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635504964] [2021-05-02 18:51:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:21,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:21,416 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 18:51:21,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:21,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635504964] [2021-05-02 18:51:21,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635504964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:21,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814069449] [2021-05-02 18:51:21,416 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 18:51:21,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 18:51:21,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:21,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:51:21,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:21,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,769 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 18:51:21,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814069449] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:21,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:21,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10] total 39 [2021-05-02 18:51:21,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869218343] [2021-05-02 18:51:21,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:51:21,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:21,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:51:21,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:51:21,770 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 18:51:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:23,090 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-05-02 18:51:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:51:23,090 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 18:51:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:23,091 INFO L225 Difference]: With dead ends: 87 [2021-05-02 18:51:23,091 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 18:51:23,092 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1673.9ms TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:51:23,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 18:51:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-02 18:51:23,093 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 18:51:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-05-02 18:51:23,094 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 81 [2021-05-02 18:51:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:23,094 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-05-02 18:51:23,094 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 18:51:23,094 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-05-02 18:51:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 18:51:23,094 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:23,094 INFO L523 BasicCegarLoop]: trace histogram [36, 28, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:23,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 18:51:23,311 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:23,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1514396915, now seen corresponding path program 25 times [2021-05-02 18:51:23,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:23,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494898276] [2021-05-02 18:51:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:23,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:23,687 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 18:51:23,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:23,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494898276] [2021-05-02 18:51:23,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494898276] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:23,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831234443] [2021-05-02 18:51:23,688 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 18:51:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:23,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:51:23,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:23,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,899 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 18:51:23,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831234443] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:23,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:23,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-02 18:51:23,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703150846] [2021-05-02 18:51:23,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 18:51:23,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:23,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 18:51:23,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:51:23,901 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 18:51:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:24,792 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2021-05-02 18:51:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 18:51:24,793 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 18:51:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:24,793 INFO L225 Difference]: With dead ends: 88 [2021-05-02 18:51:24,793 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 18:51:24,795 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1106.9ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 18:51:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 18:51:24,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-02 18:51:24,796 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 18:51:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-05-02 18:51:24,796 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 85 [2021-05-02 18:51:24,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:24,796 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-05-02 18:51:24,796 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 18:51:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-05-02 18:51:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 18:51:24,797 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:24,797 INFO L523 BasicCegarLoop]: trace histogram [37, 29, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:25,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:25,013 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:25,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1667365297, now seen corresponding path program 26 times [2021-05-02 18:51:25,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:25,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334535601] [2021-05-02 18:51:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:25,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:25,454 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 18:51:25,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:25,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334535601] [2021-05-02 18:51:25,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334535601] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:25,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335499126] [2021-05-02 18:51:25,455 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 18:51:25,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:25,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:25,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:51:25,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:25,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,682 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 18:51:25,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335499126] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:25,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:25,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 18:51:25,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675797112] [2021-05-02 18:51:25,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 18:51:25,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:25,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 18:51:25,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:51:25,685 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 18:51:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:26,817 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2021-05-02 18:51:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:51:26,818 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 18:51:26,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:26,818 INFO L225 Difference]: With dead ends: 90 [2021-05-02 18:51:26,818 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 18:51:26,819 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1358.7ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:51:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 18:51:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-02 18:51:26,820 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 18:51:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-05-02 18:51:26,820 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 87 [2021-05-02 18:51:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:26,820 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-05-02 18:51:26,820 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 18:51:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-05-02 18:51:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 18:51:26,824 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:26,824 INFO L523 BasicCegarLoop]: trace histogram [38, 30, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:27,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 18:51:27,038 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:27,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1324136277, now seen corresponding path program 27 times [2021-05-02 18:51:27,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:27,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130537935] [2021-05-02 18:51:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:27,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:27,467 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 18:51:27,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:27,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130537935] [2021-05-02 18:51:27,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130537935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:27,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013651530] [2021-05-02 18:51:27,468 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 18:51:27,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-02 18:51:27,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:27,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:51:27,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:27,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,881 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 18:51:27,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013651530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:27,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:27,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 11] total 43 [2021-05-02 18:51:27,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056771215] [2021-05-02 18:51:27,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:51:27,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:27,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:51:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:51:27,883 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 18:51:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:29,531 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-05-02 18:51:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 18:51:29,531 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 18:51:29,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:29,532 INFO L225 Difference]: With dead ends: 95 [2021-05-02 18:51:29,532 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 18:51:29,532 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 2075.9ms TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:51:29,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 18:51:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-02 18:51:29,534 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 18:51:29,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-05-02 18:51:29,534 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 89 [2021-05-02 18:51:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:29,534 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-05-02 18:51:29,534 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 18:51:29,534 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-05-02 18:51:29,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 18:51:29,535 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:29,535 INFO L523 BasicCegarLoop]: trace histogram [40, 31, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:29,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:29,752 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:29,752 INFO L82 PathProgramCache]: Analyzing trace with hash -229136574, now seen corresponding path program 28 times [2021-05-02 18:51:29,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:29,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577127495] [2021-05-02 18:51:29,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:30,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:30,219 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 18:51:30,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:30,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577127495] [2021-05-02 18:51:30,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577127495] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:30,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492730509] [2021-05-02 18:51:30,220 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 18:51:30,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:30,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:30,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:51:30,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:30,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,409 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 18:51:30,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492730509] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:30,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:30,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 18:51:30,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915764372] [2021-05-02 18:51:30,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 18:51:30,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:30,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 18:51:30,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:51:30,410 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 18:51:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:31,541 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-05-02 18:51:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:51:31,541 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 18:51:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:31,542 INFO L225 Difference]: With dead ends: 96 [2021-05-02 18:51:31,542 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 18:51:31,542 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1469.4ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:51:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 18:51:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-02 18:51:31,543 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 18:51:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2021-05-02 18:51:31,544 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 93 [2021-05-02 18:51:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:31,544 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2021-05-02 18:51:31,544 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 18:51:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2021-05-02 18:51:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 18:51:31,544 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:31,545 INFO L523 BasicCegarLoop]: trace histogram [41, 32, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:31,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 18:51:31,752 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:31,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2031137950, now seen corresponding path program 29 times [2021-05-02 18:51:31,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:31,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694707131] [2021-05-02 18:51:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:32,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:32,261 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 18:51:32,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:32,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694707131] [2021-05-02 18:51:32,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694707131] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:32,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775409862] [2021-05-02 18:51:32,261 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 18:51:32,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 18:51:32,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:32,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:51:32,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:32,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,487 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 18:51:32,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775409862] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:32,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:32,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-02 18:51:32,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286114474] [2021-05-02 18:51:32,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 18:51:32,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:32,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 18:51:32,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 18:51:32,489 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 18:51:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:33,532 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-05-02 18:51:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 18:51:33,533 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 18:51:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:33,535 INFO L225 Difference]: With dead ends: 98 [2021-05-02 18:51:33,536 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 18:51:33,536 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1352.5ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:51:33,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 18:51:33,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 18:51:33,548 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 18:51:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-05-02 18:51:33,549 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 95 [2021-05-02 18:51:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:33,549 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-05-02 18:51:33,549 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 18:51:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-05-02 18:51:33,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 18:51:33,555 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:33,555 INFO L523 BasicCegarLoop]: trace histogram [42, 33, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:33,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:33,756 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:33,756 INFO L82 PathProgramCache]: Analyzing trace with hash 901503738, now seen corresponding path program 30 times [2021-05-02 18:51:33,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:33,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293389375] [2021-05-02 18:51:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:34,156 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 18:51:34,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:34,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293389375] [2021-05-02 18:51:34,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293389375] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:34,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220764310] [2021-05-02 18:51:34,156 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 18:51:34,263 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-02 18:51:34,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:34,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:51:34,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:34,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:34,556 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 18:51:34,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220764310] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:34,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:34,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 47 [2021-05-02 18:51:34,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305961866] [2021-05-02 18:51:34,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 18:51:34,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:34,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 18:51:34,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 18:51:34,558 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 18:51:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:35,842 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-05-02 18:51:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:51:35,843 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 18:51:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:35,845 INFO L225 Difference]: With dead ends: 103 [2021-05-02 18:51:35,845 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 18:51:35,846 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 1654.2ms TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:51:35,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 18:51:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-02 18:51:35,863 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 18:51:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-05-02 18:51:35,864 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 97 [2021-05-02 18:51:35,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:35,864 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-05-02 18:51:35,864 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 18:51:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-05-02 18:51:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 18:51:35,865 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:35,865 INFO L523 BasicCegarLoop]: trace histogram [44, 34, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:36,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 18:51:36,081 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:36,081 INFO L82 PathProgramCache]: Analyzing trace with hash 29935057, now seen corresponding path program 31 times [2021-05-02 18:51:36,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:36,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104164757] [2021-05-02 18:51:36,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:36,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:36,486 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 18:51:36,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:36,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104164757] [2021-05-02 18:51:36,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104164757] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:36,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146777095] [2021-05-02 18:51:36,486 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 18:51:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:36,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 18:51:36,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:36,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:36,675 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 18:51:36,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146777095] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:36,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:36,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-02 18:51:36,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571785202] [2021-05-02 18:51:36,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:51:36,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:36,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:51:36,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:51:36,676 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 18:51:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:37,793 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2021-05-02 18:51:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 18:51:37,793 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 18:51:37,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:37,794 INFO L225 Difference]: With dead ends: 104 [2021-05-02 18:51:37,794 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 18:51:37,794 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1343.3ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:51:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 18:51:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-02 18:51:37,796 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 18:51:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-05-02 18:51:37,796 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 101 [2021-05-02 18:51:37,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:37,796 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-05-02 18:51:37,796 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 18:51:37,796 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-05-02 18:51:37,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 18:51:37,797 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:37,797 INFO L523 BasicCegarLoop]: trace histogram [45, 35, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:38,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 18:51:38,009 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:38,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2118338771, now seen corresponding path program 32 times [2021-05-02 18:51:38,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:38,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516418508] [2021-05-02 18:51:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:38,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:38,446 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 18:51:38,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:38,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516418508] [2021-05-02 18:51:38,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516418508] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:38,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588795821] [2021-05-02 18:51:38,447 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 18:51:38,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:38,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:38,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:51:38,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:38,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:38,679 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 18:51:38,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588795821] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:38,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:38,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 18:51:38,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031557692] [2021-05-02 18:51:38,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 18:51:38,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:38,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 18:51:38,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:51:38,681 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 18:51:40,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:40,216 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2021-05-02 18:51:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:51:40,217 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 18:51:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:40,217 INFO L225 Difference]: With dead ends: 106 [2021-05-02 18:51:40,217 INFO L226 Difference]: Without dead ends: 106 [2021-05-02 18:51:40,232 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1642.2ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:51:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-02 18:51:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-05-02 18:51:40,234 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 18:51:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2021-05-02 18:51:40,234 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 103 [2021-05-02 18:51:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:40,235 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2021-05-02 18:51:40,235 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 18:51:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2021-05-02 18:51:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 18:51:40,235 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:40,235 INFO L523 BasicCegarLoop]: trace histogram [46, 36, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:40,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 18:51:40,452 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:40,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:40,452 INFO L82 PathProgramCache]: Analyzing trace with hash -730218103, now seen corresponding path program 33 times [2021-05-02 18:51:40,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:40,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845141060] [2021-05-02 18:51:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:40,956 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 18:51:40,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:40,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845141060] [2021-05-02 18:51:40,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845141060] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:40,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245548562] [2021-05-02 18:51:40,956 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 18:51:41,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 18:51:41,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:41,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:51:41,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:41,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,399 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 18:51:41,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245548562] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:41,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:41,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13] total 51 [2021-05-02 18:51:41,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052149136] [2021-05-02 18:51:41,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:51:41,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:41,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:51:41,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:51:41,402 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 18:51:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:43,283 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-05-02 18:51:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:51:43,284 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 18:51:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:43,284 INFO L225 Difference]: With dead ends: 111 [2021-05-02 18:51:43,284 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 18:51:43,285 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 2401.1ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:51:43,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 18:51:43,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-02 18:51:43,286 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 18:51:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-05-02 18:51:43,286 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 105 [2021-05-02 18:51:43,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:43,287 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-05-02 18:51:43,287 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 18:51:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-05-02 18:51:43,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 18:51:43,287 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:43,287 INFO L523 BasicCegarLoop]: trace histogram [48, 37, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:43,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 18:51:43,497 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1691932512, now seen corresponding path program 34 times [2021-05-02 18:51:43,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:43,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717230522] [2021-05-02 18:51:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:44,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:44,224 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 18:51:44,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:44,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717230522] [2021-05-02 18:51:44,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717230522] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:44,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320952467] [2021-05-02 18:51:44,225 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 18:51:44,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:44,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:44,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 18:51:44,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,436 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 18:51:44,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320952467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:44,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:44,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 18:51:44,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600923693] [2021-05-02 18:51:44,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 18:51:44,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:44,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 18:51:44,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:51:44,437 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 18:51:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:46,078 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-05-02 18:51:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 18:51:46,078 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 18:51:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:46,079 INFO L225 Difference]: With dead ends: 112 [2021-05-02 18:51:46,079 INFO L226 Difference]: Without dead ends: 112 [2021-05-02 18:51:46,079 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 2057.8ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:51:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-02 18:51:46,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-05-02 18:51:46,081 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 18:51:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2021-05-02 18:51:46,081 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 109 [2021-05-02 18:51:46,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:46,081 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-05-02 18:51:46,082 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 18:51:46,082 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2021-05-02 18:51:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 18:51:46,082 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:46,082 INFO L523 BasicCegarLoop]: trace histogram [49, 38, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:46,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 18:51:46,291 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:46,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:46,291 INFO L82 PathProgramCache]: Analyzing trace with hash 758251004, now seen corresponding path program 35 times [2021-05-02 18:51:46,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:46,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061255660] [2021-05-02 18:51:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:46,956 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 18:51:46,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:46,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061255660] [2021-05-02 18:51:46,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061255660] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:46,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867785637] [2021-05-02 18:51:46,957 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 18:51:47,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-05-02 18:51:47,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:47,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 18:51:47,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:47,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,209 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 18:51:47,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867785637] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:47,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:47,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-02 18:51:47,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556599193] [2021-05-02 18:51:47,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:51:47,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:47,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:51:47,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:51:47,210 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 18:51:48,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:48,680 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2021-05-02 18:51:48,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 18:51:48,680 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 18:51:48,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:48,680 INFO L225 Difference]: With dead ends: 114 [2021-05-02 18:51:48,681 INFO L226 Difference]: Without dead ends: 114 [2021-05-02 18:51:48,681 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1976.1ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:51:48,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-02 18:51:48,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-05-02 18:51:48,682 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 18:51:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2021-05-02 18:51:48,683 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 111 [2021-05-02 18:51:48,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:48,683 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2021-05-02 18:51:48,683 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 18:51:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2021-05-02 18:51:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 18:51:48,683 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:48,683 INFO L523 BasicCegarLoop]: trace histogram [50, 39, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:48,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 18:51:48,897 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:48,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1742531672, now seen corresponding path program 36 times [2021-05-02 18:51:48,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:48,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800302956] [2021-05-02 18:51:48,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:49,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:49,623 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 18:51:49,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:49,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800302956] [2021-05-02 18:51:49,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800302956] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:49,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823328735] [2021-05-02 18:51:49,624 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 18:51:49,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-02 18:51:49,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:49,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:51:49,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:49,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:50,327 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 18:51:50,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823328735] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:50,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:50,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 14] total 55 [2021-05-02 18:51:50,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213215354] [2021-05-02 18:51:50,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:51:50,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:50,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:51:50,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:51:50,329 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 18:51:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:52,855 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2021-05-02 18:51:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 18:51:52,855 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 18:51:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:52,856 INFO L225 Difference]: With dead ends: 119 [2021-05-02 18:51:52,856 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 18:51:52,856 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 3404.9ms TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:51:52,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 18:51:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-02 18:51:52,858 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 18:51:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2021-05-02 18:51:52,858 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 113 [2021-05-02 18:51:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:52,858 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2021-05-02 18:51:52,858 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 18:51:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2021-05-02 18:51:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 18:51:52,859 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:52,859 INFO L523 BasicCegarLoop]: trace histogram [52, 40, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:53,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-05-02 18:51:53,069 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:53,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1731805265, now seen corresponding path program 37 times [2021-05-02 18:51:53,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:53,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680211021] [2021-05-02 18:51:53,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:53,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:53,824 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 18:51:53,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:53,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680211021] [2021-05-02 18:51:53,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680211021] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:53,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063998823] [2021-05-02 18:51:53,825 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 18:51:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:53,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 18:51:53,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:53,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:53,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,047 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 18:51:54,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063998823] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:54,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:54,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-02 18:51:54,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896355448] [2021-05-02 18:51:54,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 18:51:54,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:54,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 18:51:54,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 18:51:54,049 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 18:51:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:55,797 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-05-02 18:51:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 18:51:55,798 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 18:51:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:55,798 INFO L225 Difference]: With dead ends: 120 [2021-05-02 18:51:55,798 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 18:51:55,799 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 2266.1ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:51:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 18:51:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 18:51:55,800 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 18:51:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2021-05-02 18:51:55,800 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 117 [2021-05-02 18:51:55,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:55,801 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2021-05-02 18:51:55,801 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 18:51:55,801 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2021-05-02 18:51:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 18:51:55,801 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:55,801 INFO L523 BasicCegarLoop]: trace histogram [53, 41, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:56,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:56,017 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:56,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:56,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1178306293, now seen corresponding path program 38 times [2021-05-02 18:51:56,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:56,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513847204] [2021-05-02 18:51:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:56,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:56,820 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 18:51:56,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:56,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513847204] [2021-05-02 18:51:56,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513847204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:56,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787014556] [2021-05-02 18:51:56,820 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 18:51:56,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:56,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:56,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 18:51:56,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:56,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,071 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 18:51:57,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787014556] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:57,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:57,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 18:51:57,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678446823] [2021-05-02 18:51:57,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 18:51:57,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:57,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 18:51:57,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:51:57,073 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 18:51:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:58,943 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2021-05-02 18:51:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 18:51:58,944 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 18:51:58,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:58,945 INFO L225 Difference]: With dead ends: 122 [2021-05-02 18:51:58,945 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 18:51:58,945 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2390.6ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:51:58,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 18:51:58,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-05-02 18:51:58,947 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 18:51:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2021-05-02 18:51:58,947 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 119 [2021-05-02 18:51:58,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:58,948 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2021-05-02 18:51:58,948 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 18:51:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2021-05-02 18:51:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 18:51:58,948 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:58,948 INFO L523 BasicCegarLoop]: trace histogram [54, 42, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:59,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:59,157 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:59,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:59,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1841738905, now seen corresponding path program 39 times [2021-05-02 18:51:59,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:59,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429561937] [2021-05-02 18:51:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:00,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:00,017 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 18:52:00,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:00,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429561937] [2021-05-02 18:52:00,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429561937] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:00,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655560415] [2021-05-02 18:52:00,018 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 18:52:00,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-02 18:52:00,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:00,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:52:00,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:00,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,819 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 18:52:00,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655560415] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:00,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:00,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 15] total 59 [2021-05-02 18:52:00,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151819827] [2021-05-02 18:52:00,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 18:52:00,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:00,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 18:52:00,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:52:00,820 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 18:52:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:03,600 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2021-05-02 18:52:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:52:03,600 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 18:52:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:03,601 INFO L225 Difference]: With dead ends: 127 [2021-05-02 18:52:03,601 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 18:52:03,601 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 3862.2ms TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:52:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 18:52:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-02 18:52:03,603 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 18:52:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-05-02 18:52:03,603 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 121 [2021-05-02 18:52:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:03,603 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-05-02 18:52:03,603 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 18:52:03,603 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-05-02 18:52:03,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 18:52:03,604 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:03,604 INFO L523 BasicCegarLoop]: trace histogram [56, 43, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:03,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:03,813 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:03,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:03,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1145079042, now seen corresponding path program 40 times [2021-05-02 18:52:03,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:03,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570961733] [2021-05-02 18:52:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:04,679 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 18:52:04,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:04,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570961733] [2021-05-02 18:52:04,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570961733] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:04,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832344601] [2021-05-02 18:52:04,679 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 18:52:04,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:04,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:04,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 18:52:04,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:04,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,918 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 18:52:04,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832344601] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:04,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:04,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 18:52:04,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007267324] [2021-05-02 18:52:04,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 18:52:04,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:04,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 18:52:04,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:52:04,920 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 18:52:06,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:06,851 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-05-02 18:52:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:52:06,852 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 18:52:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:06,852 INFO L225 Difference]: With dead ends: 128 [2021-05-02 18:52:06,852 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 18:52:06,853 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2520.4ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:52:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 18:52:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-02 18:52:06,854 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 18:52:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2021-05-02 18:52:06,855 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 125 [2021-05-02 18:52:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:06,855 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2021-05-02 18:52:06,855 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 18:52:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2021-05-02 18:52:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 18:52:06,855 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:06,855 INFO L523 BasicCegarLoop]: trace histogram [57, 44, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:07,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 18:52:07,065 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:07,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:07,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1284249690, now seen corresponding path program 41 times [2021-05-02 18:52:07,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:07,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100812022] [2021-05-02 18:52:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:07,990 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 18:52:07,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:07,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100812022] [2021-05-02 18:52:07,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100812022] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:07,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112712359] [2021-05-02 18:52:07,991 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 18:52:08,066 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-05-02 18:52:08,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:08,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 18:52:08,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:08,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,252 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 18:52:08,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112712359] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:08,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:08,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-02 18:52:08,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746499448] [2021-05-02 18:52:08,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 18:52:08,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:08,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 18:52:08,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 18:52:08,253 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 18:52:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:10,249 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2021-05-02 18:52:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 18:52:10,250 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 18:52:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:10,250 INFO L225 Difference]: With dead ends: 130 [2021-05-02 18:52:10,250 INFO L226 Difference]: Without dead ends: 130 [2021-05-02 18:52:10,251 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2644.2ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:52:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-02 18:52:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-05-02 18:52:10,252 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 18:52:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2021-05-02 18:52:10,253 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 127 [2021-05-02 18:52:10,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:10,253 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2021-05-02 18:52:10,253 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 18:52:10,253 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2021-05-02 18:52:10,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 18:52:10,253 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:10,253 INFO L523 BasicCegarLoop]: trace histogram [58, 45, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:10,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:10,461 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:10,461 INFO L82 PathProgramCache]: Analyzing trace with hash -593047882, now seen corresponding path program 42 times [2021-05-02 18:52:10,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:10,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456122716] [2021-05-02 18:52:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:11,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:11,281 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 18:52:11,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:11,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456122716] [2021-05-02 18:52:11,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456122716] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:11,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609407821] [2021-05-02 18:52:11,281 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 18:52:11,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 18:52:11,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:11,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:52:11,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:11,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,217 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 18:52:12,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609407821] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:12,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:12,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16] total 63 [2021-05-02 18:52:12,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819006877] [2021-05-02 18:52:12,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:52:12,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:12,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:52:12,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:52:12,219 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 18:52:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:14,894 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2021-05-02 18:52:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:52:14,895 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 18:52:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:14,896 INFO L225 Difference]: With dead ends: 135 [2021-05-02 18:52:14,896 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 18:52:14,896 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 3849.1ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:52:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 18:52:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-02 18:52:14,898 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 18:52:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-05-02 18:52:14,898 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 129 [2021-05-02 18:52:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:14,899 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-05-02 18:52:14,899 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 18:52:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-05-02 18:52:14,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 18:52:14,899 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:14,899 INFO L523 BasicCegarLoop]: trace histogram [60, 46, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:15,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:15,113 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:15,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:15,113 INFO L82 PathProgramCache]: Analyzing trace with hash 183323277, now seen corresponding path program 43 times [2021-05-02 18:52:15,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:15,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832185183] [2021-05-02 18:52:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:16,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:16,112 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 18:52:16,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:16,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832185183] [2021-05-02 18:52:16,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832185183] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:16,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886456486] [2021-05-02 18:52:16,112 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 18:52:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:16,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 18:52:16,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:16,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,366 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 18:52:16,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886456486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:16,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:16,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-02 18:52:16,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571733278] [2021-05-02 18:52:16,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:52:16,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:16,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:52:16,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:52:16,368 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 18:52:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:18,264 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-05-02 18:52:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 18:52:18,264 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 18:52:18,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:18,265 INFO L225 Difference]: With dead ends: 136 [2021-05-02 18:52:18,265 INFO L226 Difference]: Without dead ends: 136 [2021-05-02 18:52:18,265 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2699.1ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:52:18,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-02 18:52:18,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-05-02 18:52:18,267 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 18:52:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2021-05-02 18:52:18,267 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 133 [2021-05-02 18:52:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:18,267 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2021-05-02 18:52:18,267 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 18:52:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2021-05-02 18:52:18,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 18:52:18,268 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:18,268 INFO L523 BasicCegarLoop]: trace histogram [61, 47, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:18,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 18:52:18,477 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:18,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1348783081, now seen corresponding path program 44 times [2021-05-02 18:52:18,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:18,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288399432] [2021-05-02 18:52:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:19,545 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 18:52:19,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:19,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288399432] [2021-05-02 18:52:19,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288399432] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:19,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535142732] [2021-05-02 18:52:19,546 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 18:52:19,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:19,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:19,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:52:19,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:19,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,819 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 18:52:19,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535142732] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:19,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:19,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 18:52:19,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862605861] [2021-05-02 18:52:19,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 18:52:19,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:19,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 18:52:19,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:52:19,820 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 18:52:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:22,026 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2021-05-02 18:52:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:52:22,026 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 18:52:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:22,027 INFO L225 Difference]: With dead ends: 138 [2021-05-02 18:52:22,027 INFO L226 Difference]: Without dead ends: 138 [2021-05-02 18:52:22,027 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2954.3ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:52:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-05-02 18:52:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-05-02 18:52:22,029 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 18:52:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2021-05-02 18:52:22,029 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 135 [2021-05-02 18:52:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:22,029 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2021-05-02 18:52:22,029 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 18:52:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2021-05-02 18:52:22,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 18:52:22,030 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:22,030 INFO L523 BasicCegarLoop]: trace histogram [62, 48, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:22,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 18:52:22,247 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:22,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:22,247 INFO L82 PathProgramCache]: Analyzing trace with hash 369190469, now seen corresponding path program 45 times [2021-05-02 18:52:22,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:22,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168870931] [2021-05-02 18:52:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:23,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:23,046 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 18:52:23,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:23,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168870931] [2021-05-02 18:52:23,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168870931] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:23,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520355241] [2021-05-02 18:52:23,046 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 18:52:23,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-02 18:52:23,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:23,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 18:52:23,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:23,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,735 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 18:52:23,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520355241] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:23,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:23,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 17] total 67 [2021-05-02 18:52:23,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850107280] [2021-05-02 18:52:23,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:52:23,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:23,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:52:23,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:52:23,736 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 18:52:27,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:27,095 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2021-05-02 18:52:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 18:52:27,095 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 18:52:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:27,096 INFO L225 Difference]: With dead ends: 143 [2021-05-02 18:52:27,096 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 18:52:27,096 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 4256.8ms TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 18:52:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 18:52:27,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-02 18:52:27,098 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 18:52:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-05-02 18:52:27,098 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 137 [2021-05-02 18:52:27,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:27,098 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-05-02 18:52:27,099 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 18:52:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-05-02 18:52:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 18:52:27,099 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:27,099 INFO L523 BasicCegarLoop]: trace histogram [64, 49, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:27,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 18:52:27,309 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:27,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1911561820, now seen corresponding path program 46 times [2021-05-02 18:52:27,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:27,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657934886] [2021-05-02 18:52:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:28,462 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 18:52:28,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:28,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657934886] [2021-05-02 18:52:28,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657934886] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:28,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429741780] [2021-05-02 18:52:28,463 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 18:52:28,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:28,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:28,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 18:52:28,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:28,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,733 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 18:52:28,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429741780] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:28,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:28,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 18:52:28,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957034786] [2021-05-02 18:52:28,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 18:52:28,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:28,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 18:52:28,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:52:28,735 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 18:52:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:31,126 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2021-05-02 18:52:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:52:31,127 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 18:52:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:31,127 INFO L225 Difference]: With dead ends: 144 [2021-05-02 18:52:31,127 INFO L226 Difference]: Without dead ends: 144 [2021-05-02 18:52:31,128 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 3206.7ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:52:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-02 18:52:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-05-02 18:52:31,130 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 18:52:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2021-05-02 18:52:31,130 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 141 [2021-05-02 18:52:31,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:31,130 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2021-05-02 18:52:31,130 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 18:52:31,130 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2021-05-02 18:52:31,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:52:31,131 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:31,131 INFO L523 BasicCegarLoop]: trace histogram [65, 50, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:31,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:31,341 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:31,341 INFO L82 PathProgramCache]: Analyzing trace with hash 351175608, now seen corresponding path program 47 times [2021-05-02 18:52:31,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:31,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742988285] [2021-05-02 18:52:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:32,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:32,553 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 18:52:32,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:32,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742988285] [2021-05-02 18:52:32,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742988285] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:32,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374833312] [2021-05-02 18:52:32,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 18:52:32,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-02 18:52:32,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:32,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 18:52:32,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:32,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,863 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 18:52:32,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374833312] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:32,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:32,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-02 18:52:32,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536800802] [2021-05-02 18:52:32,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:52:32,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:32,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:52:32,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:52:32,865 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 18:52:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:35,258 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2021-05-02 18:52:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 18:52:35,258 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 18:52:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:35,259 INFO L225 Difference]: With dead ends: 146 [2021-05-02 18:52:35,259 INFO L226 Difference]: Without dead ends: 146 [2021-05-02 18:52:35,260 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 3234.7ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:52:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-02 18:52:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-02 18:52:35,261 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 18:52:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2021-05-02 18:52:35,261 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 143 [2021-05-02 18:52:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:35,261 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2021-05-02 18:52:35,261 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 18:52:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2021-05-02 18:52:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 18:52:35,262 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:35,262 INFO L523 BasicCegarLoop]: trace histogram [66, 51, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:35,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:35,463 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:35,463 INFO L82 PathProgramCache]: Analyzing trace with hash -236387820, now seen corresponding path program 48 times [2021-05-02 18:52:35,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:35,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709620572] [2021-05-02 18:52:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:36,622 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 18:52:36,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:36,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709620572] [2021-05-02 18:52:36,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709620572] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:36,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131384020] [2021-05-02 18:52:36,623 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 18:52:36,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-02 18:52:36,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:36,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:52:36,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:36,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:36,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:36,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:36,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:36,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:36,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,763 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 18:52:37,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131384020] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:37,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:37,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 18] total 71 [2021-05-02 18:52:37,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126898197] [2021-05-02 18:52:37,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 18:52:37,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 18:52:37,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:52:37,764 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 18:52:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:41,338 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-05-02 18:52:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:52:41,338 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 18:52:41,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:41,339 INFO L225 Difference]: With dead ends: 151 [2021-05-02 18:52:41,339 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 18:52:41,340 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 5106.3ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 18:52:41,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 18:52:41,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-02 18:52:41,341 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 18:52:41,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2021-05-02 18:52:41,341 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 145 [2021-05-02 18:52:41,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:41,341 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2021-05-02 18:52:41,342 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 18:52:41,342 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2021-05-02 18:52:41,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 18:52:41,342 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:41,342 INFO L523 BasicCegarLoop]: trace histogram [68, 52, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:41,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-02 18:52:41,543 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:41,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1607735701, now seen corresponding path program 49 times [2021-05-02 18:52:41,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:41,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712709067] [2021-05-02 18:52:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:42,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:42,839 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 18:52:42,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:42,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712709067] [2021-05-02 18:52:42,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712709067] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:42,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167546719] [2021-05-02 18:52:42,840 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 18:52:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:42,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 18:52:42,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:42,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:43,120 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 18:52:43,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167546719] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:43,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:43,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-02 18:52:43,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869081476] [2021-05-02 18:52:43,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 18:52:43,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:43,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 18:52:43,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 18:52:43,122 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 18:52:45,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:45,586 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2021-05-02 18:52:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 18:52:45,586 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 18:52:45,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:45,587 INFO L225 Difference]: With dead ends: 152 [2021-05-02 18:52:45,587 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 18:52:45,587 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 3521.3ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:52:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 18:52:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-05-02 18:52:45,589 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 18:52:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2021-05-02 18:52:45,589 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 149 [2021-05-02 18:52:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:45,589 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2021-05-02 18:52:45,589 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 18:52:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2021-05-02 18:52:45,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 18:52:45,590 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:45,590 INFO L523 BasicCegarLoop]: trace histogram [69, 53, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:45,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:45,805 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:45,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1383256121, now seen corresponding path program 50 times [2021-05-02 18:52:45,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:45,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309976795] [2021-05-02 18:52:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:46,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:46,948 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 18:52:46,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:46,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309976795] [2021-05-02 18:52:46,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309976795] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:46,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40233808] [2021-05-02 18:52:46,949 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 18:52:47,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:47,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:47,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 18:52:47,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:47,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,246 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 18:52:47,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40233808] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:47,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:47,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 18:52:47,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618910845] [2021-05-02 18:52:47,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 18:52:47,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:47,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 18:52:47,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:52:47,247 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 18:52:49,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:49,756 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2021-05-02 18:52:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 18:52:49,757 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 18:52:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:49,757 INFO L225 Difference]: With dead ends: 154 [2021-05-02 18:52:49,758 INFO L226 Difference]: Without dead ends: 154 [2021-05-02 18:52:49,758 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3343.7ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:52:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-02 18:52:49,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-05-02 18:52:49,759 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 18:52:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2021-05-02 18:52:49,760 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 151 [2021-05-02 18:52:49,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:49,760 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2021-05-02 18:52:49,760 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 18:52:49,760 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2021-05-02 18:52:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 18:52:49,760 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:49,760 INFO L523 BasicCegarLoop]: trace histogram [70, 54, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:49,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 18:52:49,969 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:49,969 INFO L82 PathProgramCache]: Analyzing trace with hash -406744541, now seen corresponding path program 51 times [2021-05-02 18:52:49,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:49,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377934252] [2021-05-02 18:52:49,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:51,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:51,384 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 18:52:51,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:51,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377934252] [2021-05-02 18:52:51,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377934252] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:51,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508033971] [2021-05-02 18:52:51,384 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 18:52:51,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 18:52:51,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:51,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:52:51,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:51,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:51,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,691 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 18:52:52,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508033971] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:52,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:52,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 19] total 75 [2021-05-02 18:52:52,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460570420] [2021-05-02 18:52:52,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:52:52,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:52,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:52:52,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:52:52,692 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 18:52:56,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:56,766 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2021-05-02 18:52:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:52:56,767 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 18:52:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:56,767 INFO L225 Difference]: With dead ends: 159 [2021-05-02 18:52:56,767 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 18:52:56,768 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 6023.6ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 18:52:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 18:52:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-02 18:52:56,769 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 18:52:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2021-05-02 18:52:56,769 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 153 [2021-05-02 18:52:56,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:56,770 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2021-05-02 18:52:56,770 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 18:52:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2021-05-02 18:52:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 18:52:56,770 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:56,770 INFO L523 BasicCegarLoop]: trace histogram [72, 55, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:56,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-02 18:52:56,971 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:56,971 INFO L82 PathProgramCache]: Analyzing trace with hash 667456186, now seen corresponding path program 52 times [2021-05-02 18:52:56,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:56,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105712676] [2021-05-02 18:52:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:58,406 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 18:52:58,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:58,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105712676] [2021-05-02 18:52:58,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105712676] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:58,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666985467] [2021-05-02 18:52:58,406 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 18:52:58,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:58,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:58,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 18:52:58,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:58,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,711 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 18:52:58,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666985467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:58,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:58,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-02 18:52:58,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674016020] [2021-05-02 18:52:58,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 18:52:58,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:58,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 18:52:58,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:52:58,713 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 18:53:01,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:01,484 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-05-02 18:53:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:53:01,484 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 18:53:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:01,485 INFO L225 Difference]: With dead ends: 160 [2021-05-02 18:53:01,485 INFO L226 Difference]: Without dead ends: 160 [2021-05-02 18:53:01,485 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 3837.8ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 18:53:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-02 18:53:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-05-02 18:53:01,487 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 18:53:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 178 transitions. [2021-05-02 18:53:01,487 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 178 transitions. Word has length 157 [2021-05-02 18:53:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:01,487 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 178 transitions. [2021-05-02 18:53:01,487 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 18:53:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 178 transitions. [2021-05-02 18:53:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 18:53:01,488 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:01,488 INFO L523 BasicCegarLoop]: trace histogram [73, 56, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:01,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 18:53:01,697 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:01,697 INFO L82 PathProgramCache]: Analyzing trace with hash 275300374, now seen corresponding path program 53 times [2021-05-02 18:53:01,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:01,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947180808] [2021-05-02 18:53:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:03,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:03,162 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 18:53:03,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:03,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947180808] [2021-05-02 18:53:03,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947180808] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:03,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219506806] [2021-05-02 18:53:03,163 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 18:53:03,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2021-05-02 18:53:03,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:03,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 18:53:03,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:03,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,499 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 18:53:03,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219506806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:03,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:03,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-02 18:53:03,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727677203] [2021-05-02 18:53:03,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 18:53:03,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:03,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 18:53:03,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 18:53:03,513 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 18:53:06,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:06,415 INFO L93 Difference]: Finished difference Result 162 states and 180 transitions. [2021-05-02 18:53:06,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 18:53:06,415 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 18:53:06,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:06,416 INFO L225 Difference]: With dead ends: 162 [2021-05-02 18:53:06,416 INFO L226 Difference]: Without dead ends: 162 [2021-05-02 18:53:06,416 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3981.6ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 18:53:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-02 18:53:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-05-02 18:53:06,418 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 18:53:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2021-05-02 18:53:06,427 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 159 [2021-05-02 18:53:06,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:06,428 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2021-05-02 18:53:06,428 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 18:53:06,428 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2021-05-02 18:53:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 18:53:06,428 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:06,428 INFO L523 BasicCegarLoop]: trace histogram [74, 57, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:06,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-02 18:53:06,637 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:06,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1370687090, now seen corresponding path program 54 times [2021-05-02 18:53:06,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:06,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981093702] [2021-05-02 18:53:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:07,736 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 18:53:07,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:07,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981093702] [2021-05-02 18:53:07,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981093702] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:07,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270204041] [2021-05-02 18:53:07,736 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 18:53:07,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-02 18:53:07,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:07,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 18:53:07,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:08,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:08,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,203 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 18:53:09,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270204041] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:09,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:09,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 20] total 79 [2021-05-02 18:53:09,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110864340] [2021-05-02 18:53:09,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:53:09,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:09,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:53:09,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:53:09,205 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 18:53:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:13,240 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2021-05-02 18:53:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 18:53:13,241 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 18:53:13,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:13,245 INFO L225 Difference]: With dead ends: 167 [2021-05-02 18:53:13,245 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 18:53:13,246 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 5806.3ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-02 18:53:13,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 18:53:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-02 18:53:13,251 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 18:53:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2021-05-02 18:53:13,253 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 161 [2021-05-02 18:53:13,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:13,253 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2021-05-02 18:53:13,253 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 18:53:13,253 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2021-05-02 18:53:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 18:53:13,253 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:13,254 INFO L523 BasicCegarLoop]: trace histogram [76, 58, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:13,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:13,470 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:13,470 INFO L82 PathProgramCache]: Analyzing trace with hash -592309431, now seen corresponding path program 55 times [2021-05-02 18:53:13,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:13,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137918267] [2021-05-02 18:53:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:15,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:15,090 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 18:53:15,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:15,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137918267] [2021-05-02 18:53:15,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137918267] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:15,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173838628] [2021-05-02 18:53:15,090 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 18:53:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:15,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 18:53:15,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:15,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:15,404 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 18:53:15,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173838628] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:15,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:15,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-02 18:53:15,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498762685] [2021-05-02 18:53:15,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:53:15,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:15,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:53:15,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:53:15,405 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 18:53:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:18,395 INFO L93 Difference]: Finished difference Result 168 states and 187 transitions. [2021-05-02 18:53:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 18:53:18,396 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 18:53:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:18,396 INFO L225 Difference]: With dead ends: 168 [2021-05-02 18:53:18,396 INFO L226 Difference]: Without dead ends: 168 [2021-05-02 18:53:18,397 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 4224.7ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 18:53:18,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-02 18:53:18,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-05-02 18:53:18,398 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 18:53:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2021-05-02 18:53:18,399 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 165 [2021-05-02 18:53:18,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:18,399 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2021-05-02 18:53:18,399 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 18:53:18,399 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2021-05-02 18:53:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 18:53:18,399 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:18,399 INFO L523 BasicCegarLoop]: trace histogram [77, 59, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:18,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 18:53:18,609 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:18,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:18,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1970087077, now seen corresponding path program 56 times [2021-05-02 18:53:18,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:18,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42268294] [2021-05-02 18:53:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:20,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:20,302 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 18:53:20,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:20,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42268294] [2021-05-02 18:53:20,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42268294] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:20,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576593253] [2021-05-02 18:53:20,303 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 18:53:20,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:53:20,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:20,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 18:53:20,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:20,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,625 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 18:53:20,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576593253] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:20,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:20,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 18:53:20,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946776165] [2021-05-02 18:53:20,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 18:53:20,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:20,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 18:53:20,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:53:20,626 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 18:53:23,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:23,498 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2021-05-02 18:53:23,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:53:23,498 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 18:53:23,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:23,499 INFO L225 Difference]: With dead ends: 170 [2021-05-02 18:53:23,499 INFO L226 Difference]: Without dead ends: 170 [2021-05-02 18:53:23,499 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 4199.6ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 18:53:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-02 18:53:23,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-05-02 18:53:23,518 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 18:53:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 189 transitions. [2021-05-02 18:53:23,518 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 189 transitions. Word has length 167 [2021-05-02 18:53:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:23,518 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 189 transitions. [2021-05-02 18:53:23,518 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 18:53:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 189 transitions. [2021-05-02 18:53:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 18:53:23,519 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:23,519 INFO L523 BasicCegarLoop]: trace histogram [78, 60, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:23,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:23,720 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:23,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:23,720 INFO L82 PathProgramCache]: Analyzing trace with hash -878096639, now seen corresponding path program 57 times [2021-05-02 18:53:23,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:23,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897636928] [2021-05-02 18:53:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:25,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:25,469 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 18:53:25,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:25,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897636928] [2021-05-02 18:53:25,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897636928] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:25,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161471516] [2021-05-02 18:53:25,470 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 18:53:25,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-02 18:53:25,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:25,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:53:25,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:25,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:26,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:27,027 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 18:53:27,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161471516] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:27,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:27,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 21] total 83 [2021-05-02 18:53:27,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556228228] [2021-05-02 18:53:27,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 18:53:27,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:27,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 18:53:27,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:53:27,029 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 18:53:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:31,820 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2021-05-02 18:53:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:53:31,821 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 18:53:31,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:31,821 INFO L225 Difference]: With dead ends: 175 [2021-05-02 18:53:31,822 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 18:53:31,822 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 7246.1ms TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2021-05-02 18:53:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 18:53:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-02 18:53:31,824 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 18:53:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-05-02 18:53:31,824 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 169 [2021-05-02 18:53:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:31,824 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-05-02 18:53:31,825 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 18:53:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-05-02 18:53:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 18:53:31,825 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:31,825 INFO L523 BasicCegarLoop]: trace histogram [80, 61, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:32,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-02 18:53:32,037 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:32,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:32,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1939363864, now seen corresponding path program 58 times [2021-05-02 18:53:32,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:32,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830272230] [2021-05-02 18:53:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:33,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:33,540 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 18:53:33,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:33,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830272230] [2021-05-02 18:53:33,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830272230] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:33,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465174820] [2021-05-02 18:53:33,540 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 18:53:33,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:53:33,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:33,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 18:53:33,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:33,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,878 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 18:53:33,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465174820] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:33,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:33,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 18:53:33,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635618442] [2021-05-02 18:53:33,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 18:53:33,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:33,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 18:53:33,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:53:33,880 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 18:53:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:37,161 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2021-05-02 18:53:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 18:53:37,161 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 18:53:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:37,162 INFO L225 Difference]: With dead ends: 176 [2021-05-02 18:53:37,162 INFO L226 Difference]: Without dead ends: 176 [2021-05-02 18:53:37,162 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 4364.6ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 18:53:37,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-02 18:53:37,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-02 18:53:37,164 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 18:53:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2021-05-02 18:53:37,164 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 173 [2021-05-02 18:53:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:37,164 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2021-05-02 18:53:37,164 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 18:53:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2021-05-02 18:53:37,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 18:53:37,165 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:37,165 INFO L523 BasicCegarLoop]: trace histogram [81, 62, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:37,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:37,373 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:37,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:37,373 INFO L82 PathProgramCache]: Analyzing trace with hash -179679884, now seen corresponding path program 59 times [2021-05-02 18:53:37,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:37,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221790730] [2021-05-02 18:53:37,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:39,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:39,078 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 18:53:39,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:39,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221790730] [2021-05-02 18:53:39,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221790730] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:39,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818356250] [2021-05-02 18:53:39,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 18:53:39,174 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2021-05-02 18:53:39,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:39,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 18:53:39,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:39,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,464 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 18:53:39,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818356250] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:39,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:39,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-02 18:53:39,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693504662] [2021-05-02 18:53:39,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:53:39,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:39,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:53:39,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:53:39,467 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 18:53:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:42,848 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2021-05-02 18:53:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 18:53:42,848 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 18:53:42,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:42,849 INFO L225 Difference]: With dead ends: 178 [2021-05-02 18:53:42,849 INFO L226 Difference]: Without dead ends: 178 [2021-05-02 18:53:42,849 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4651.9ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 18:53:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-05-02 18:53:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-05-02 18:53:42,851 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 18:53:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2021-05-02 18:53:42,851 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 175 [2021-05-02 18:53:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:42,851 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2021-05-02 18:53:42,851 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 18:53:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2021-05-02 18:53:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 18:53:42,852 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:42,852 INFO L523 BasicCegarLoop]: trace histogram [82, 63, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:43,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-02 18:53:43,061 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:43,061 INFO L82 PathProgramCache]: Analyzing trace with hash -766223408, now seen corresponding path program 60 times [2021-05-02 18:53:43,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:43,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897477946] [2021-05-02 18:53:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:44,828 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 18:53:44,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:44,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897477946] [2021-05-02 18:53:44,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897477946] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:44,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932324697] [2021-05-02 18:53:44,828 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 18:53:44,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 18:53:44,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:44,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:53:44,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:45,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,437 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 18:53:46,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932324697] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:46,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:46,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 22] total 87 [2021-05-02 18:53:46,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785167632] [2021-05-02 18:53:46,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:53:46,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:46,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:53:46,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:53:46,439 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 18:53:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:51,409 INFO L93 Difference]: Finished difference Result 183 states and 205 transitions. [2021-05-02 18:53:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:53:51,410 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 18:53:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:51,411 INFO L225 Difference]: With dead ends: 183 [2021-05-02 18:53:51,411 INFO L226 Difference]: Without dead ends: 183 [2021-05-02 18:53:51,412 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 7497.0ms TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2021-05-02 18:53:51,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-02 18:53:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-02 18:53:51,413 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 18:53:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2021-05-02 18:53:51,414 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 177 [2021-05-02 18:53:51,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:51,414 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2021-05-02 18:53:51,414 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 18:53:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2021-05-02 18:53:51,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 18:53:51,415 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:51,415 INFO L523 BasicCegarLoop]: trace histogram [84, 64, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:51,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:51,625 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:51,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:51,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1626296615, now seen corresponding path program 61 times [2021-05-02 18:53:51,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:51,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679100641] [2021-05-02 18:53:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:53,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:53,452 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 18:53:53,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:53,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679100641] [2021-05-02 18:53:53,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679100641] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:53,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775415534] [2021-05-02 18:53:53,453 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 18:53:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:53,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 18:53:53,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:53,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,821 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 18:53:53,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775415534] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:53,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:53,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-02 18:53:53,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632658981] [2021-05-02 18:53:53,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 18:53:53,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:53,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 18:53:53,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 18:53:53,822 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 18:53:57,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:57,399 INFO L93 Difference]: Finished difference Result 184 states and 205 transitions. [2021-05-02 18:53:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 18:53:57,400 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 18:53:57,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:57,401 INFO L225 Difference]: With dead ends: 184 [2021-05-02 18:53:57,401 INFO L226 Difference]: Without dead ends: 184 [2021-05-02 18:53:57,401 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 4975.2ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 18:53:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-05-02 18:53:57,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-05-02 18:53:57,403 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 18:53:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2021-05-02 18:53:57,403 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 181 [2021-05-02 18:53:57,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:57,403 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2021-05-02 18:53:57,403 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 18:53:57,403 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2021-05-02 18:53:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 18:53:57,404 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:57,404 INFO L523 BasicCegarLoop]: trace histogram [85, 65, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:57,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 18:53:57,613 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:57,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:57,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1752443523, now seen corresponding path program 62 times [2021-05-02 18:53:57,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:57,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221595308] [2021-05-02 18:53:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:59,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:59,452 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 18:53:59,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:59,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221595308] [2021-05-02 18:53:59,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221595308] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:59,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246757501] [2021-05-02 18:53:59,452 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 18:53:59,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:53:59,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:59,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 18:53:59,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:59,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,819 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 18:53:59,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246757501] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:59,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:59,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 18:53:59,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31844841] [2021-05-02 18:53:59,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 18:53:59,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:59,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 18:53:59,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:53:59,821 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 18:54:03,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:03,247 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2021-05-02 18:54:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 18:54:03,247 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 18:54:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:03,248 INFO L225 Difference]: With dead ends: 186 [2021-05-02 18:54:03,248 INFO L226 Difference]: Without dead ends: 186 [2021-05-02 18:54:03,249 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4991.9ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 18:54:03,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-05-02 18:54:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-05-02 18:54:03,250 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 18:54:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 207 transitions. [2021-05-02 18:54:03,250 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 207 transitions. Word has length 183 [2021-05-02 18:54:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:03,250 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 207 transitions. [2021-05-02 18:54:03,250 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 18:54:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 207 transitions. [2021-05-02 18:54:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 18:54:03,251 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:03,251 INFO L523 BasicCegarLoop]: trace histogram [86, 66, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:03,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:03,464 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:03,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:03,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1574429473, now seen corresponding path program 63 times [2021-05-02 18:54:03,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:03,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257053070] [2021-05-02 18:54:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:05,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:05,358 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 18:54:05,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:05,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257053070] [2021-05-02 18:54:05,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257053070] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:05,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349849606] [2021-05-02 18:54:05,358 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 18:54:05,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-02 18:54:05,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:05,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 18:54:05,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:05,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:05,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:05,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:05,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:05,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:05,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:05,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:05,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:05,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:05,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,140 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 18:54:07,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349849606] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:07,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:07,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 23] total 91 [2021-05-02 18:54:07,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328007223] [2021-05-02 18:54:07,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:54:07,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:07,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:54:07,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:54:07,142 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 18:54:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:12,923 INFO L93 Difference]: Finished difference Result 191 states and 214 transitions. [2021-05-02 18:54:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:54:12,924 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 18:54:12,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:12,924 INFO L225 Difference]: With dead ends: 191 [2021-05-02 18:54:12,924 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 18:54:12,925 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 8514.0ms TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2021-05-02 18:54:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 18:54:12,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-02 18:54:12,927 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 18:54:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2021-05-02 18:54:12,927 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 185 [2021-05-02 18:54:12,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:12,927 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2021-05-02 18:54:12,927 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 18:54:12,927 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2021-05-02 18:54:12,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 18:54:12,928 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:12,928 INFO L523 BasicCegarLoop]: trace histogram [88, 67, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:13,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 18:54:13,137 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:13,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:13,137 INFO L82 PathProgramCache]: Analyzing trace with hash -135336330, now seen corresponding path program 64 times [2021-05-02 18:54:13,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:13,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632914806] [2021-05-02 18:54:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:15,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:15,112 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 18:54:15,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:15,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632914806] [2021-05-02 18:54:15,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632914806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:15,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517742787] [2021-05-02 18:54:15,113 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 18:54:15,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:54:15,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:15,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 18:54:15,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:15,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:15,493 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 18:54:15,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517742787] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:15,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:15,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 18:54:15,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326170735] [2021-05-02 18:54:15,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 18:54:15,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:15,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 18:54:15,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 18:54:15,494 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 18:54:18,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:18,988 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2021-05-02 18:54:18,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:54:18,989 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 18:54:18,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:18,989 INFO L225 Difference]: With dead ends: 192 [2021-05-02 18:54:18,989 INFO L226 Difference]: Without dead ends: 192 [2021-05-02 18:54:18,990 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 5048.8ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 18:54:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-02 18:54:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-05-02 18:54:18,991 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 18:54:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2021-05-02 18:54:18,992 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 189 [2021-05-02 18:54:18,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:18,992 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2021-05-02 18:54:18,992 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 18:54:18,992 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2021-05-02 18:54:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 18:54:18,992 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:18,993 INFO L523 BasicCegarLoop]: trace histogram [89, 68, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:19,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 18:54:19,201 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:19,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:19,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2044548142, now seen corresponding path program 65 times [2021-05-02 18:54:19,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:19,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178907731] [2021-05-02 18:54:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:21,276 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 18:54:21,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:21,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178907731] [2021-05-02 18:54:21,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178907731] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:21,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970460433] [2021-05-02 18:54:21,277 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 18:54:21,385 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-02 18:54:21,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:21,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 18:54:21,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:21,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:21,708 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 18:54:21,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970460433] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:21,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:21,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 18:54:21,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122365350] [2021-05-02 18:54:21,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 18:54:21,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:21,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 18:54:21,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 18:54:21,725 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 18:54:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:25,691 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2021-05-02 18:54:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 18:54:25,691 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 18:54:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:25,692 INFO L225 Difference]: With dead ends: 194 [2021-05-02 18:54:25,692 INFO L226 Difference]: Without dead ends: 194 [2021-05-02 18:54:25,692 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 5572.0ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 18:54:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-05-02 18:54:25,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-05-02 18:54:25,694 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 18:54:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2021-05-02 18:54:25,694 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 191 [2021-05-02 18:54:25,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:25,694 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2021-05-02 18:54:25,694 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 18:54:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2021-05-02 18:54:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 18:54:25,695 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:25,695 INFO L523 BasicCegarLoop]: trace histogram [90, 69, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:25,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 18:54:25,896 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:25,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:25,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1448903214, now seen corresponding path program 66 times [2021-05-02 18:54:25,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:25,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465657895] [2021-05-02 18:54:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:28,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:28,015 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 18:54:28,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:28,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465657895] [2021-05-02 18:54:28,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465657895] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:28,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619374098] [2021-05-02 18:54:28,015 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 18:54:28,188 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-02 18:54:28,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:28,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:54:28,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:28,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:30,053 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 18:54:30,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619374098] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:30,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:30,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 24] total 95 [2021-05-02 18:54:30,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185044772] [2021-05-02 18:54:30,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 18:54:30,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:30,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 18:54:30,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 18:54:30,055 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 18:54:36,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:36,411 INFO L93 Difference]: Finished difference Result 199 states and 223 transitions. [2021-05-02 18:54:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:54:36,411 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 18:54:36,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:36,412 INFO L225 Difference]: With dead ends: 199 [2021-05-02 18:54:36,412 INFO L226 Difference]: Without dead ends: 199 [2021-05-02 18:54:36,413 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 9489.1ms TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2021-05-02 18:54:36,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-02 18:54:36,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-02 18:54:36,415 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 18:54:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-05-02 18:54:36,415 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 193 [2021-05-02 18:54:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:36,415 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-05-02 18:54:36,415 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 18:54:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-05-02 18:54:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 18:54:36,416 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:36,416 INFO L523 BasicCegarLoop]: trace histogram [92, 70, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:36,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:36,625 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:36,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:36,625 INFO L82 PathProgramCache]: Analyzing trace with hash -913104891, now seen corresponding path program 67 times [2021-05-02 18:54:36,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:36,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816184309] [2021-05-02 18:54:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:38,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:38,819 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 18:54:38,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:38,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816184309] [2021-05-02 18:54:38,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816184309] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:38,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998525674] [2021-05-02 18:54:38,819 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 18:54:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:38,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 18:54:38,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:38,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:38,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:39,243 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 18:54:39,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998525674] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:39,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:39,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-02 18:54:39,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090401941] [2021-05-02 18:54:39,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:54:39,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:39,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:54:39,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:54:39,245 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 18:54:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:43,466 INFO L93 Difference]: Finished difference Result 200 states and 223 transitions. [2021-05-02 18:54:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 18:54:43,466 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 18:54:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:43,467 INFO L225 Difference]: With dead ends: 200 [2021-05-02 18:54:43,467 INFO L226 Difference]: Without dead ends: 200 [2021-05-02 18:54:43,468 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 5881.6ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 18:54:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-02 18:54:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-02 18:54:43,469 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 18:54:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 223 transitions. [2021-05-02 18:54:43,470 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 223 transitions. Word has length 197 [2021-05-02 18:54:43,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:43,470 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 223 transitions. [2021-05-02 18:54:43,470 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 18:54:43,470 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 223 transitions. [2021-05-02 18:54:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 18:54:43,471 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:43,471 INFO L523 BasicCegarLoop]: trace histogram [93, 71, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:43,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:43,681 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:43,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1129431393, now seen corresponding path program 68 times [2021-05-02 18:54:43,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:43,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300710173] [2021-05-02 18:54:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:45,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:45,685 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 18:54:45,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:45,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300710173] [2021-05-02 18:54:45,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300710173] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:45,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742527132] [2021-05-02 18:54:45,685 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 18:54:45,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:54:45,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:45,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 18:54:45,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:45,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:45,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:46,095 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 18:54:46,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742527132] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:46,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:46,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 18:54:46,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929877805] [2021-05-02 18:54:46,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 18:54:46,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:46,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 18:54:46,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:54:46,097 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 18:54:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:50,119 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2021-05-02 18:54:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:54:50,119 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 18:54:50,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:50,120 INFO L225 Difference]: With dead ends: 202 [2021-05-02 18:54:50,120 INFO L226 Difference]: Without dead ends: 202 [2021-05-02 18:54:50,121 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 5711.7ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 18:54:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-02 18:54:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-05-02 18:54:50,122 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 18:54:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 225 transitions. [2021-05-02 18:54:50,123 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 225 transitions. Word has length 199 [2021-05-02 18:54:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:50,123 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 225 transitions. [2021-05-02 18:54:50,123 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 18:54:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 225 transitions. [2021-05-02 18:54:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 18:54:50,124 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:50,124 INFO L523 BasicCegarLoop]: trace histogram [94, 72, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:50,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:50,324 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:50,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1206746045, now seen corresponding path program 69 times [2021-05-02 18:54:50,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:50,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678553474] [2021-05-02 18:54:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:52,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:52,641 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 18:54:52,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:52,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678553474] [2021-05-02 18:54:52,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678553474] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:52,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479242111] [2021-05-02 18:54:52,642 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 18:54:52,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 18:54:52,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:52,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:54:52,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:52,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:52,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:53,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,576 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 18:54:54,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479242111] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:54,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:54,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 25] total 99 [2021-05-02 18:54:54,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699798533] [2021-05-02 18:54:54,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:54:54,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:54,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:54:54,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:54:54,578 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 18:55:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:00,928 INFO L93 Difference]: Finished difference Result 207 states and 232 transitions. [2021-05-02 18:55:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:55:00,928 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 18:55:00,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:00,929 INFO L225 Difference]: With dead ends: 207 [2021-05-02 18:55:00,929 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 18:55:00,930 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4632 ImplicationChecksByTransitivity, 9573.9ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-02 18:55:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 18:55:00,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-02 18:55:00,932 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 18:55:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 230 transitions. [2021-05-02 18:55:00,932 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 230 transitions. Word has length 201 [2021-05-02 18:55:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:00,932 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 230 transitions. [2021-05-02 18:55:00,932 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 18:55:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 230 transitions. [2021-05-02 18:55:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 18:55:00,933 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:00,933 INFO L523 BasicCegarLoop]: trace histogram [96, 73, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:01,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-05-02 18:55:01,141 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:01,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:01,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1134286292, now seen corresponding path program 70 times [2021-05-02 18:55:01,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:01,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323546929] [2021-05-02 18:55:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:03,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:03,583 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 18:55:03,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:03,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323546929] [2021-05-02 18:55:03,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323546929] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:03,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344785645] [2021-05-02 18:55:03,584 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 18:55:03,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:55:03,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:03,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 18:55:03,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:03,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,044 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 18:55:04,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344785645] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:04,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:04,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-02 18:55:04,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719943477] [2021-05-02 18:55:04,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 18:55:04,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:04,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 18:55:04,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:55:04,045 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 18:55:08,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:08,437 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2021-05-02 18:55:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 18:55:08,438 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 18:55:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:08,438 INFO L225 Difference]: With dead ends: 208 [2021-05-02 18:55:08,438 INFO L226 Difference]: Without dead ends: 208 [2021-05-02 18:55:08,439 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 6498.1ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 18:55:08,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-05-02 18:55:08,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-05-02 18:55:08,440 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 18:55:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 232 transitions. [2021-05-02 18:55:08,441 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 232 transitions. Word has length 205 [2021-05-02 18:55:08,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:08,441 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 232 transitions. [2021-05-02 18:55:08,441 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 18:55:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 232 transitions. [2021-05-02 18:55:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 18:55:08,442 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:08,442 INFO L523 BasicCegarLoop]: trace histogram [97, 74, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:08,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:08,649 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:08,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:08,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1908497200, now seen corresponding path program 71 times [2021-05-02 18:55:08,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:08,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864000765] [2021-05-02 18:55:08,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:11,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:11,138 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 18:55:11,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:11,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864000765] [2021-05-02 18:55:11,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864000765] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:11,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208588920] [2021-05-02 18:55:11,139 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 18:55:11,268 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 98 check-sat command(s) [2021-05-02 18:55:11,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:11,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 18:55:11,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:11,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:11,651 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 18:55:11,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208588920] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:11,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:11,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 18:55:11,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371827127] [2021-05-02 18:55:11,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:55:11,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:11,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:55:11,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:55:11,653 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 18:55:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:16,035 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2021-05-02 18:55:16,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 18:55:16,036 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 18:55:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:16,037 INFO L225 Difference]: With dead ends: 210 [2021-05-02 18:55:16,037 INFO L226 Difference]: Without dead ends: 210 [2021-05-02 18:55:16,037 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 6327.4ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 18:55:16,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-02 18:55:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-05-02 18:55:16,039 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 18:55:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2021-05-02 18:55:16,039 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 207 [2021-05-02 18:55:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:16,039 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2021-05-02 18:55:16,040 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 18:55:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2021-05-02 18:55:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 18:55:16,040 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:16,040 INFO L523 BasicCegarLoop]: trace histogram [98, 75, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:16,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:16,249 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:16,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:16,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1399129716, now seen corresponding path program 72 times [2021-05-02 18:55:16,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:16,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302823619] [2021-05-02 18:55:16,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:18,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:18,818 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 18:55:18,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:18,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302823619] [2021-05-02 18:55:18,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302823619] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:18,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831066985] [2021-05-02 18:55:18,819 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 18:55:18,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-02 18:55:18,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:18,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:55:18,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:19,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:19,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:20,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:21,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:21,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:21,139 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 18:55:21,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831066985] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:21,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:21,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 26] total 103 [2021-05-02 18:55:21,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246243642] [2021-05-02 18:55:21,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:55:21,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:21,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:55:21,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:55:21,141 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 18:55:29,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:29,026 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2021-05-02 18:55:29,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 18:55:29,027 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 18:55:29,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:29,027 INFO L225 Difference]: With dead ends: 215 [2021-05-02 18:55:29,027 INFO L226 Difference]: Without dead ends: 215 [2021-05-02 18:55:29,029 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5025 ImplicationChecksByTransitivity, 11506.2ms TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2021-05-02 18:55:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-02 18:55:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-05-02 18:55:29,030 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 18:55:29,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 239 transitions. [2021-05-02 18:55:29,031 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 239 transitions. Word has length 209 [2021-05-02 18:55:29,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:29,031 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 239 transitions. [2021-05-02 18:55:29,031 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 18:55:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 239 transitions. [2021-05-02 18:55:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 18:55:29,032 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:29,032 INFO L523 BasicCegarLoop]: trace histogram [100, 76, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:29,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:29,232 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:29,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1886584861, now seen corresponding path program 73 times [2021-05-02 18:55:29,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:29,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584719400] [2021-05-02 18:55:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:31,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:31,957 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 18:55:31,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:31,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584719400] [2021-05-02 18:55:31,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584719400] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:31,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080254050] [2021-05-02 18:55:31,958 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 18:55:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:32,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 18:55:32,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:32,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,441 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 18:55:32,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080254050] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:32,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:32,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-02 18:55:32,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569689662] [2021-05-02 18:55:32,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 18:55:32,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:32,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 18:55:32,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 18:55:32,442 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 18:55:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:37,494 INFO L93 Difference]: Finished difference Result 216 states and 241 transitions. [2021-05-02 18:55:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 18:55:37,495 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 18:55:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:37,496 INFO L225 Difference]: With dead ends: 216 [2021-05-02 18:55:37,496 INFO L226 Difference]: Without dead ends: 216 [2021-05-02 18:55:37,497 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 7185.9ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 18:55:37,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-05-02 18:55:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-05-02 18:55:37,499 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 18:55:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 241 transitions. [2021-05-02 18:55:37,499 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 241 transitions. Word has length 213 [2021-05-02 18:55:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:37,499 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 241 transitions. [2021-05-02 18:55:37,499 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 18:55:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 241 transitions. [2021-05-02 18:55:37,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 18:55:37,500 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:37,500 INFO L523 BasicCegarLoop]: trace histogram [101, 77, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:37,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-02 18:55:37,709 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:37,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:37,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1628083905, now seen corresponding path program 74 times [2021-05-02 18:55:37,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:37,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314262215] [2021-05-02 18:55:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:40,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:40,471 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 18:55:40,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:40,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314262215] [2021-05-02 18:55:40,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314262215] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:40,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21407449] [2021-05-02 18:55:40,471 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 18:55:40,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:55:40,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:40,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 18:55:40,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:40,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,975 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 18:55:40,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21407449] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:40,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:40,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 18:55:40,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901976942] [2021-05-02 18:55:40,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 18:55:40,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:40,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 18:55:40,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:55:40,977 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 18:55:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:46,239 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2021-05-02 18:55:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:55:46,240 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 18:55:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:46,241 INFO L225 Difference]: With dead ends: 218 [2021-05-02 18:55:46,241 INFO L226 Difference]: Without dead ends: 218 [2021-05-02 18:55:46,242 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 7400.8ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 18:55:46,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-02 18:55:46,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-02 18:55:46,243 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 18:55:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 243 transitions. [2021-05-02 18:55:46,244 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 243 transitions. Word has length 215 [2021-05-02 18:55:46,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:46,244 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 243 transitions. [2021-05-02 18:55:46,244 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 18:55:46,244 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 243 transitions. [2021-05-02 18:55:46,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 18:55:46,244 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:46,245 INFO L523 BasicCegarLoop]: trace histogram [102, 78, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:46,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:46,445 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:46,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:46,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1978198939, now seen corresponding path program 75 times [2021-05-02 18:55:46,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:46,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973378719] [2021-05-02 18:55:46,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:49,270 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 18:55:49,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:49,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973378719] [2021-05-02 18:55:49,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973378719] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:49,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321652459] [2021-05-02 18:55:49,271 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 18:55:49,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-02 18:55:49,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:49,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:55:49,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:49,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:50,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,733 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 18:55:51,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321652459] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:51,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:51,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 27] total 107 [2021-05-02 18:55:51,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679656570] [2021-05-02 18:55:51,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 18:55:51,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:51,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 18:55:51,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:55:51,735 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 18:56:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:00,302 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2021-05-02 18:56:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 18:56:00,302 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 18:56:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:00,303 INFO L225 Difference]: With dead ends: 223 [2021-05-02 18:56:00,303 INFO L226 Difference]: Without dead ends: 223 [2021-05-02 18:56:00,304 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 12609.2ms TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2021-05-02 18:56:00,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-02 18:56:00,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-05-02 18:56:00,306 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 18:56:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 248 transitions. [2021-05-02 18:56:00,306 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 248 transitions. Word has length 217 [2021-05-02 18:56:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:00,306 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 248 transitions. [2021-05-02 18:56:00,306 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 18:56:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 248 transitions. [2021-05-02 18:56:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 18:56:00,307 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:00,307 INFO L523 BasicCegarLoop]: trace histogram [104, 79, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:00,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 18:56:00,508 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:00,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:00,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1313960398, now seen corresponding path program 76 times [2021-05-02 18:56:00,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:00,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505019087] [2021-05-02 18:56:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:03,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:03,545 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 18:56:03,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:03,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505019087] [2021-05-02 18:56:03,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505019087] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:03,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185093604] [2021-05-02 18:56:03,545 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 18:56:03,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:56:03,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:03,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 18:56:03,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:03,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:03,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,140 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 18:56:04,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185093604] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:04,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:04,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 18:56:04,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276181566] [2021-05-02 18:56:04,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 18:56:04,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:04,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 18:56:04,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:56:04,141 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 18:56:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:09,255 INFO L93 Difference]: Finished difference Result 224 states and 250 transitions. [2021-05-02 18:56:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:56:09,256 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 18:56:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:09,257 INFO L225 Difference]: With dead ends: 224 [2021-05-02 18:56:09,257 INFO L226 Difference]: Without dead ends: 224 [2021-05-02 18:56:09,258 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 7649.0ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 18:56:09,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-05-02 18:56:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-05-02 18:56:09,259 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 18:56:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 250 transitions. [2021-05-02 18:56:09,259 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 250 transitions. Word has length 221 [2021-05-02 18:56:09,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:09,260 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 250 transitions. [2021-05-02 18:56:09,260 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 18:56:09,260 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 250 transitions. [2021-05-02 18:56:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-02 18:56:09,260 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:09,261 INFO L523 BasicCegarLoop]: trace histogram [105, 80, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:09,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:09,476 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:09,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:09,476 INFO L82 PathProgramCache]: Analyzing trace with hash 859167630, now seen corresponding path program 77 times [2021-05-02 18:56:09,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:09,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065489554] [2021-05-02 18:56:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:11,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:11,669 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 18:56:11,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:11,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065489554] [2021-05-02 18:56:11,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065489554] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:11,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533996209] [2021-05-02 18:56:11,669 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 18:56:11,814 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2021-05-02 18:56:11,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:11,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 18:56:11,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:11,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:11,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:12,310 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 18:56:12,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533996209] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:12,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:12,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 18:56:12,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290105025] [2021-05-02 18:56:12,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:56:12,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:12,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:56:12,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:56:12,312 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 18:56:17,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:17,268 INFO L93 Difference]: Finished difference Result 226 states and 252 transitions. [2021-05-02 18:56:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 18:56:17,268 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 18:56:17,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:17,269 INFO L225 Difference]: With dead ends: 226 [2021-05-02 18:56:17,269 INFO L226 Difference]: Without dead ends: 226 [2021-05-02 18:56:17,270 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 6558.2ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 18:56:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-05-02 18:56:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-05-02 18:56:17,272 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 18:56:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 252 transitions. [2021-05-02 18:56:17,272 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 252 transitions. Word has length 223 [2021-05-02 18:56:17,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:17,272 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 252 transitions. [2021-05-02 18:56:17,272 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 18:56:17,272 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 252 transitions. [2021-05-02 18:56:17,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-02 18:56:17,273 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:17,273 INFO L523 BasicCegarLoop]: trace histogram [106, 81, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:17,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:17,488 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:17,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:17,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1881096682, now seen corresponding path program 78 times [2021-05-02 18:56:17,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:17,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132810445] [2021-05-02 18:56:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:20,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:20,919 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 18:56:20,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:20,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132810445] [2021-05-02 18:56:20,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132810445] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:20,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363517635] [2021-05-02 18:56:20,920 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 18:56:21,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-02 18:56:21,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:21,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:56:21,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:21,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:23,704 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 18:56:23,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363517635] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:23,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:23,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 28] total 111 [2021-05-02 18:56:23,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502352880] [2021-05-02 18:56:23,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 18:56:23,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:23,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 18:56:23,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 18:56:23,706 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 18:56:33,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:33,581 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2021-05-02 18:56:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 18:56:33,582 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 18:56:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:33,582 INFO L225 Difference]: With dead ends: 231 [2021-05-02 18:56:33,582 INFO L226 Difference]: Without dead ends: 231 [2021-05-02 18:56:33,584 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5859 ImplicationChecksByTransitivity, 14444.9ms TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2021-05-02 18:56:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-05-02 18:56:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-05-02 18:56:33,586 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 18:56:33,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2021-05-02 18:56:33,586 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 225 [2021-05-02 18:56:33,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:33,586 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2021-05-02 18:56:33,586 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 18:56:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2021-05-02 18:56:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 18:56:33,587 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:33,587 INFO L523 BasicCegarLoop]: trace histogram [108, 82, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:33,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:33,788 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:33,788 INFO L82 PathProgramCache]: Analyzing trace with hash -401837887, now seen corresponding path program 79 times [2021-05-02 18:56:33,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:33,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347381536] [2021-05-02 18:56:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:37,098 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 18:56:37,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:37,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347381536] [2021-05-02 18:56:37,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347381536] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:37,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162537626] [2021-05-02 18:56:37,099 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 18:56:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:37,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 18:56:37,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:37,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:37,654 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 18:56:37,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162537626] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:37,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:37,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-02 18:56:37,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009506681] [2021-05-02 18:56:37,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:56:37,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:37,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:56:37,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:56:37,656 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 18:56:43,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:43,577 INFO L93 Difference]: Finished difference Result 232 states and 259 transitions. [2021-05-02 18:56:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 18:56:43,578 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 18:56:43,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:43,579 INFO L225 Difference]: With dead ends: 232 [2021-05-02 18:56:43,579 INFO L226 Difference]: Without dead ends: 232 [2021-05-02 18:56:43,580 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 8741.3ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 18:56:43,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-02 18:56:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-05-02 18:56:43,581 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 18:56:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 259 transitions. [2021-05-02 18:56:43,582 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 259 transitions. Word has length 229 [2021-05-02 18:56:43,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:43,582 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 259 transitions. [2021-05-02 18:56:43,582 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 18:56:43,582 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 259 transitions. [2021-05-02 18:56:43,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-02 18:56:43,583 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:43,583 INFO L523 BasicCegarLoop]: trace histogram [109, 83, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:43,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:43,793 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:43,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:43,793 INFO L82 PathProgramCache]: Analyzing trace with hash -795958755, now seen corresponding path program 80 times [2021-05-02 18:56:43,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:43,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986799696] [2021-05-02 18:56:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:47,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:47,276 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 18:56:47,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:47,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986799696] [2021-05-02 18:56:47,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986799696] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:47,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775249660] [2021-05-02 18:56:47,277 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 18:56:47,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:56:47,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:47,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 18:56:47,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:47,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:47,844 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 18:56:47,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775249660] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:47,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:47,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 18:56:47,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925081812] [2021-05-02 18:56:47,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:56:47,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:47,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:56:47,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:56:47,846 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 18:56:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:53,942 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2021-05-02 18:56:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:56:53,943 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 18:56:53,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:53,944 INFO L225 Difference]: With dead ends: 234 [2021-05-02 18:56:53,944 INFO L226 Difference]: Without dead ends: 234 [2021-05-02 18:56:53,945 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 9076.9ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:56:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-05-02 18:56:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-05-02 18:56:53,946 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 18:56:53,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 261 transitions. [2021-05-02 18:56:53,947 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 261 transitions. Word has length 231 [2021-05-02 18:56:53,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:53,947 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 261 transitions. [2021-05-02 18:56:53,947 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 18:56:53,947 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 261 transitions. [2021-05-02 18:56:53,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 18:56:53,947 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:53,948 INFO L523 BasicCegarLoop]: trace histogram [110, 84, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:54,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:54,157 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:54,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1588990855, now seen corresponding path program 81 times [2021-05-02 18:56:54,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:54,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072249737] [2021-05-02 18:56:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:58,347 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 18:56:58,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:58,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072249737] [2021-05-02 18:56:58,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072249737] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:58,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367347523] [2021-05-02 18:56:58,348 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 18:56:58,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-02 18:56:58,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:58,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 18:56:58,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:58,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:58,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:58,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:58,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:58,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:58,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:59,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:00,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:01,761 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 18:57:01,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367347523] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:01,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:01,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 29] total 115 [2021-05-02 18:57:01,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761893129] [2021-05-02 18:57:01,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-02 18:57:01,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:01,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-02 18:57:01,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:57:01,763 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 18:57:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:11,845 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2021-05-02 18:57:11,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-02 18:57:11,846 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 18:57:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:11,847 INFO L225 Difference]: With dead ends: 239 [2021-05-02 18:57:11,847 INFO L226 Difference]: Without dead ends: 239 [2021-05-02 18:57:11,849 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6300 ImplicationChecksByTransitivity, 16057.6ms TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2021-05-02 18:57:11,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-05-02 18:57:11,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-05-02 18:57:11,851 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 18:57:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-05-02 18:57:11,851 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 233 [2021-05-02 18:57:11,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:11,851 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-05-02 18:57:11,851 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 18:57:11,851 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-05-02 18:57:11,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-02 18:57:11,852 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:11,852 INFO L523 BasicCegarLoop]: trace histogram [112, 85, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:12,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:12,053 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:12,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:12,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1232508816, now seen corresponding path program 82 times [2021-05-02 18:57:12,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:12,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880524286] [2021-05-02 18:57:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:15,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:15,875 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 18:57:15,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:15,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880524286] [2021-05-02 18:57:15,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880524286] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:15,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275763818] [2021-05-02 18:57:15,876 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 18:57:15,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:57:15,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:15,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 18:57:15,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:15,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:15,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:15,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:15,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:15,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:15,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:15,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:16,529 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 18:57:16,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275763818] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:16,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:16,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 18:57:16,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343429465] [2021-05-02 18:57:16,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 18:57:16,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:16,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 18:57:16,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:57:16,531 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 18:57:23,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:23,250 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2021-05-02 18:57:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:57:23,251 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 18:57:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:23,252 INFO L225 Difference]: With dead ends: 240 [2021-05-02 18:57:23,252 INFO L226 Difference]: Without dead ends: 240 [2021-05-02 18:57:23,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 9933.6ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 18:57:23,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-02 18:57:23,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-05-02 18:57:23,254 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 18:57:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 268 transitions. [2021-05-02 18:57:23,254 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 268 transitions. Word has length 237 [2021-05-02 18:57:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:23,255 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 268 transitions. [2021-05-02 18:57:23,255 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 18:57:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 268 transitions. [2021-05-02 18:57:23,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 18:57:23,255 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:23,256 INFO L523 BasicCegarLoop]: trace histogram [113, 86, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:23,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:23,465 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:23,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:23,465 INFO L82 PathProgramCache]: Analyzing trace with hash -238048020, now seen corresponding path program 83 times [2021-05-02 18:57:23,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:23,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697586427] [2021-05-02 18:57:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:27,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:27,484 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 18:57:27,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:27,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697586427] [2021-05-02 18:57:27,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697586427] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:27,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530516005] [2021-05-02 18:57:27,484 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 18:57:27,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-02 18:57:27,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:27,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 18:57:27,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:27,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,117 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 18:57:28,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530516005] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:28,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:28,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 18:57:28,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547283552] [2021-05-02 18:57:28,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:57:28,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:28,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:57:28,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:57:28,119 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 18:57:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:35,042 INFO L93 Difference]: Finished difference Result 242 states and 270 transitions. [2021-05-02 18:57:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 18:57:35,043 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 18:57:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:35,044 INFO L225 Difference]: With dead ends: 242 [2021-05-02 18:57:35,044 INFO L226 Difference]: Without dead ends: 242 [2021-05-02 18:57:35,045 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 10330.4ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 18:57:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-05-02 18:57:35,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-05-02 18:57:35,047 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 18:57:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 270 transitions. [2021-05-02 18:57:35,048 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 270 transitions. Word has length 239 [2021-05-02 18:57:35,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:35,048 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 270 transitions. [2021-05-02 18:57:35,048 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 18:57:35,048 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 270 transitions. [2021-05-02 18:57:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-02 18:57:35,049 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:35,049 INFO L523 BasicCegarLoop]: trace histogram [114, 87, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:35,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 18:57:35,255 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:35,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:35,256 INFO L82 PathProgramCache]: Analyzing trace with hash -398927032, now seen corresponding path program 84 times [2021-05-02 18:57:35,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:35,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653383684] [2021-05-02 18:57:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:39,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:39,445 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 18:57:39,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:39,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653383684] [2021-05-02 18:57:39,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653383684] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:39,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568947890] [2021-05-02 18:57:39,445 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 18:57:39,708 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-02 18:57:39,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:39,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:57:39,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:39,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:42,622 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 18:57:42,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568947890] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:42,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:42,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 30] total 119 [2021-05-02 18:57:42,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034302485] [2021-05-02 18:57:42,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-02 18:57:42,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:42,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-02 18:57:42,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 18:57:42,624 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 18:57:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:54,745 INFO L93 Difference]: Finished difference Result 247 states and 277 transitions. [2021-05-02 18:57:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-02 18:57:54,746 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 18:57:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:54,747 INFO L225 Difference]: With dead ends: 247 [2021-05-02 18:57:54,747 INFO L226 Difference]: Without dead ends: 247 [2021-05-02 18:57:54,749 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6757 ImplicationChecksByTransitivity, 17839.4ms TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2021-05-02 18:57:54,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-02 18:57:54,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2021-05-02 18:57:54,751 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 18:57:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 275 transitions. [2021-05-02 18:57:54,751 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 275 transitions. Word has length 241 [2021-05-02 18:57:54,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:54,751 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 275 transitions. [2021-05-02 18:57:54,751 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 18:57:54,751 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2021-05-02 18:57:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 18:57:54,752 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:54,752 INFO L523 BasicCegarLoop]: trace histogram [116, 88, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:54,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:54,953 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:54,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1535053153, now seen corresponding path program 85 times [2021-05-02 18:57:54,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:54,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541097084] [2021-05-02 18:57:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:59,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:59,343 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 18:57:59,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:59,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541097084] [2021-05-02 18:57:59,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541097084] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:59,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278435122] [2021-05-02 18:57:59,343 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 18:57:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:59,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 18:57:59,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:59,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:59,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:00,045 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 18:58:00,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278435122] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:00,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:00,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-02 18:58:00,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872561932] [2021-05-02 18:58:00,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:58:00,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:00,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:58:00,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:58:00,047 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 18:58:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:07,237 INFO L93 Difference]: Finished difference Result 248 states and 277 transitions. [2021-05-02 18:58:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 18:58:07,238 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 18:58:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:07,239 INFO L225 Difference]: With dead ends: 248 [2021-05-02 18:58:07,239 INFO L226 Difference]: Without dead ends: 248 [2021-05-02 18:58:07,240 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 10987.3ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 18:58:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-02 18:58:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-05-02 18:58:07,241 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 18:58:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 277 transitions. [2021-05-02 18:58:07,242 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 277 transitions. Word has length 245 [2021-05-02 18:58:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:07,242 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 277 transitions. [2021-05-02 18:58:07,242 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 18:58:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 277 transitions. [2021-05-02 18:58:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-02 18:58:07,242 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:07,243 INFO L523 BasicCegarLoop]: trace histogram [117, 89, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:07,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-02 18:58:07,453 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:07,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:07,453 INFO L82 PathProgramCache]: Analyzing trace with hash -913511429, now seen corresponding path program 86 times [2021-05-02 18:58:07,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:07,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595922796] [2021-05-02 18:58:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:11,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:11,825 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 18:58:11,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:11,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595922796] [2021-05-02 18:58:11,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595922796] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:11,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622550572] [2021-05-02 18:58:11,825 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 18:58:11,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:58:11,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:11,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 18:58:11,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:11,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:11,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:12,569 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 18:58:12,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622550572] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:12,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:12,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 18:58:12,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869434519] [2021-05-02 18:58:12,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:58:12,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:12,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:58:12,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:58:12,571 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 18:58:20,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:20,324 INFO L93 Difference]: Finished difference Result 250 states and 279 transitions. [2021-05-02 18:58:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:58:20,325 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 18:58:20,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:20,326 INFO L225 Difference]: With dead ends: 250 [2021-05-02 18:58:20,326 INFO L226 Difference]: Without dead ends: 250 [2021-05-02 18:58:20,327 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 11560.9ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:58:20,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-02 18:58:20,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-05-02 18:58:20,329 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 18:58:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 279 transitions. [2021-05-02 18:58:20,329 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 279 transitions. Word has length 247 [2021-05-02 18:58:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:20,329 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 279 transitions. [2021-05-02 18:58:20,329 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 18:58:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 279 transitions. [2021-05-02 18:58:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-02 18:58:20,330 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:20,330 INFO L523 BasicCegarLoop]: trace histogram [118, 90, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:20,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:20,541 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:20,541 INFO L82 PathProgramCache]: Analyzing trace with hash -612368809, now seen corresponding path program 87 times [2021-05-02 18:58:20,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:20,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694733281] [2021-05-02 18:58:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:25,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:25,118 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 18:58:25,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:25,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694733281] [2021-05-02 18:58:25,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694733281] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:25,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946030290] [2021-05-02 18:58:25,118 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 18:58:25,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 18:58:25,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:25,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:58:25,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:25,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:25,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:25,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:25,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:25,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:25,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:25,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:25,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:26,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:27,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:28,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:29,018 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 18:58:29,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946030290] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:29,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:29,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 31] total 123 [2021-05-02 18:58:29,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773230967] [2021-05-02 18:58:29,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-02 18:58:29,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:29,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-02 18:58:29,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:58:29,020 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 18:58:41,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:41,515 INFO L93 Difference]: Finished difference Result 255 states and 286 transitions. [2021-05-02 18:58:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-02 18:58:41,516 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 18:58:41,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:41,516 INFO L225 Difference]: With dead ends: 255 [2021-05-02 18:58:41,516 INFO L226 Difference]: Without dead ends: 255 [2021-05-02 18:58:41,518 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7230 ImplicationChecksByTransitivity, 19251.7ms TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2021-05-02 18:58:41,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-05-02 18:58:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-05-02 18:58:41,520 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 18:58:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2021-05-02 18:58:41,520 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 249 [2021-05-02 18:58:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:41,521 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2021-05-02 18:58:41,521 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 18:58:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2021-05-02 18:58:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-02 18:58:41,521 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:41,521 INFO L523 BasicCegarLoop]: trace histogram [120, 91, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:41,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:41,729 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:41,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1635552786, now seen corresponding path program 88 times [2021-05-02 18:58:41,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:41,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029154753] [2021-05-02 18:58:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:47,082 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 18:58:47,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:47,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029154753] [2021-05-02 18:58:47,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029154753] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:47,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307521711] [2021-05-02 18:58:47,082 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 18:58:47,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:58:47,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:47,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 18:58:47,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:47,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,931 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 18:58:47,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307521711] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:47,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:47,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 18:58:47,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941853854] [2021-05-02 18:58:47,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:58:47,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:47,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:58:47,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:58:47,933 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 18:58:56,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:56,950 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2021-05-02 18:58:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:58:56,951 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 18:58:56,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:56,952 INFO L225 Difference]: With dead ends: 256 [2021-05-02 18:58:56,952 INFO L226 Difference]: Without dead ends: 256 [2021-05-02 18:58:56,953 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 13834.0ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:58:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-05-02 18:58:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-05-02 18:58:56,955 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 18:58:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 286 transitions. [2021-05-02 18:58:56,955 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 286 transitions. Word has length 253 [2021-05-02 18:58:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:56,955 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 286 transitions. [2021-05-02 18:58:56,955 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 18:58:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 286 transitions. [2021-05-02 18:58:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-05-02 18:58:56,956 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:56,956 INFO L523 BasicCegarLoop]: trace histogram [121, 92, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:57,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:57,165 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:57,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1629376330, now seen corresponding path program 89 times [2021-05-02 18:58:57,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:57,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056465729] [2021-05-02 18:58:57,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:02,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:02,816 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 18:59:02,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:02,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056465729] [2021-05-02 18:59:02,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056465729] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:02,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15291246] [2021-05-02 18:59:02,817 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 18:59:02,979 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2021-05-02 18:59:02,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:59:02,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:59:02,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:03,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,740 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 18:59:03,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15291246] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:03,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:03,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 18:59:03,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178974466] [2021-05-02 18:59:03,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:59:03,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:03,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:59:03,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:59:03,742 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 18:59:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:12,614 INFO L93 Difference]: Finished difference Result 258 states and 288 transitions. [2021-05-02 18:59:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 18:59:12,614 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 18:59:12,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:12,615 INFO L225 Difference]: With dead ends: 258 [2021-05-02 18:59:12,615 INFO L226 Difference]: Without dead ends: 258 [2021-05-02 18:59:12,617 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 13944.7ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 18:59:12,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-05-02 18:59:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-05-02 18:59:12,618 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 18:59:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 288 transitions. [2021-05-02 18:59:12,619 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 288 transitions. Word has length 255 [2021-05-02 18:59:12,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:12,619 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 288 transitions. [2021-05-02 18:59:12,619 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 18:59:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 288 transitions. [2021-05-02 18:59:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 18:59:12,620 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:12,620 INFO L523 BasicCegarLoop]: trace histogram [122, 93, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:12,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:59:12,833 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:12,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:12,833 INFO L82 PathProgramCache]: Analyzing trace with hash -394836570, now seen corresponding path program 90 times [2021-05-02 18:59:12,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:12,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127777097] [2021-05-02 18:59:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:18,185 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 18:59:18,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:18,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127777097] [2021-05-02 18:59:18,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127777097] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:18,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444175647] [2021-05-02 18:59:18,185 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 18:59:18,489 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-02 18:59:18,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:59:18,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:59:18,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:18,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:22,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:23,107 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 18:59:23,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444175647] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:23,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:23,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 32] total 127 [2021-05-02 18:59:23,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540046028] [2021-05-02 18:59:23,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 127 states [2021-05-02 18:59:23,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:23,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-05-02 18:59:23,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2021-05-02 18:59:23,110 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 18:59:39,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:39,612 INFO L93 Difference]: Finished difference Result 263 states and 295 transitions. [2021-05-02 18:59:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-02 18:59:39,613 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 18:59:39,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:39,614 INFO L225 Difference]: With dead ends: 263 [2021-05-02 18:59:39,614 INFO L226 Difference]: Without dead ends: 263 [2021-05-02 18:59:39,616 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7719 ImplicationChecksByTransitivity, 24588.1ms TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2021-05-02 18:59:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-02 18:59:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-05-02 18:59:39,618 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 18:59:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2021-05-02 18:59:39,618 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 257 [2021-05-02 18:59:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:39,618 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2021-05-02 18:59:39,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 127 states, 127 states have (on average 2.0708661417322833) internal successors, (263), 126 states have internal predecessors, (263), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:59:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2021-05-02 18:59:39,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-02 18:59:39,619 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:39,619 INFO L523 BasicCegarLoop]: trace histogram [124, 94, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:39,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-02 18:59:39,833 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:39,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:39,833 INFO L82 PathProgramCache]: Analyzing trace with hash 312083837, now seen corresponding path program 91 times [2021-05-02 18:59:39,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:39,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301047771] [2021-05-02 18:59:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:45,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:45,520 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 18:59:45,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:45,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301047771] [2021-05-02 18:59:45,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301047771] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:45,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710053862] [2021-05-02 18:59:45,520 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 18:59:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:45,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 18:59:45,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:45,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,515 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 18:59:46,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710053862] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:46,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:46,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-02 18:59:46,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758315065] [2021-05-02 18:59:46,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:59:46,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:46,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:59:46,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:59:46,517 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 18:59:57,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:57,286 INFO L93 Difference]: Finished difference Result 264 states and 295 transitions. [2021-05-02 18:59:57,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 18:59:57,287 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 18:59:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:57,288 INFO L225 Difference]: With dead ends: 264 [2021-05-02 18:59:57,288 INFO L226 Difference]: Without dead ends: 264 [2021-05-02 18:59:57,289 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 15591.7ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 18:59:57,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-05-02 18:59:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-05-02 18:59:57,291 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 18:59:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2021-05-02 18:59:57,291 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 261 [2021-05-02 18:59:57,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:57,292 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2021-05-02 18:59:57,292 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 18:59:57,292 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2021-05-02 18:59:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-02 18:59:57,293 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:57,293 INFO L523 BasicCegarLoop]: trace histogram [125, 95, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:57,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:59:57,501 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:57,501 INFO L82 PathProgramCache]: Analyzing trace with hash -140523815, now seen corresponding path program 92 times [2021-05-02 18:59:57,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:57,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498457913] [2021-05-02 18:59:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:04,133 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 19:00:04,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:04,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498457913] [2021-05-02 19:00:04,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498457913] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:04,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318129558] [2021-05-02 19:00:04,133 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 19:00:04,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:00:04,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:00:04,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 19:00:04,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:04,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:04,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,086 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 19:00:05,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318129558] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:05,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:05,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 19:00:05,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665493974] [2021-05-02 19:00:05,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 19:00:05,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:05,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 19:00:05,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 19:00:05,088 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 19:00:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:17,376 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2021-05-02 19:00:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 19:00:17,378 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 19:00:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:17,379 INFO L225 Difference]: With dead ends: 266 [2021-05-02 19:00:17,379 INFO L226 Difference]: Without dead ends: 266 [2021-05-02 19:00:17,380 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 18150.6ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 19:00:17,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-05-02 19:00:17,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-05-02 19:00:17,382 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 19:00:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 297 transitions. [2021-05-02 19:00:17,383 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 297 transitions. Word has length 263 [2021-05-02 19:00:17,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:17,383 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 297 transitions. [2021-05-02 19:00:17,383 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 19:00:17,383 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 297 transitions. [2021-05-02 19:00:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-02 19:00:17,384 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:17,384 INFO L523 BasicCegarLoop]: trace histogram [126, 96, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:17,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-02 19:00:17,588 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:17,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:17,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1304780491, now seen corresponding path program 93 times [2021-05-02 19:00:17,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:17,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578111455] [2021-05-02 19:00:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:25,812 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 19:00:25,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:25,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578111455] [2021-05-02 19:00:25,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578111455] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:25,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789879563] [2021-05-02 19:00:25,812 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 19:00:25,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-02 19:00:25,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:00:25,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 19:00:25,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:26,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:26,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:26,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:26,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:27,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:27,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:27,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:27,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:27,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:27,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:27,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:27,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:28,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:29,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:29,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:29,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:29,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:29,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:29,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:29,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:29,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:30,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:30,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:30,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:30,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:30,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:30,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:30,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:30,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:30,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:30,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:31,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:31,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:31,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:31,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:31,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:33,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:33,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:33,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:33,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:33,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:33,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:34,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:34,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:34,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:34,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:34,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:34,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:34,788 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 19:00:34,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789879563] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:34,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:34,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 33] total 131 [2021-05-02 19:00:34,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113500911] [2021-05-02 19:00:34,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states [2021-05-02 19:00:34,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:34,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-05-02 19:00:34,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 19:00:34,791 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 19:00:57,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:57,768 INFO L93 Difference]: Finished difference Result 271 states and 304 transitions. [2021-05-02 19:00:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-05-02 19:00:57,770 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 19:00:57,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:57,771 INFO L225 Difference]: With dead ends: 271 [2021-05-02 19:00:57,771 INFO L226 Difference]: Without dead ends: 271 [2021-05-02 19:00:57,774 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8224 ImplicationChecksByTransitivity, 37144.9ms TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2021-05-02 19:00:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-05-02 19:00:57,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2021-05-02 19:00:57,776 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 19:00:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 302 transitions. [2021-05-02 19:00:57,776 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 302 transitions. Word has length 265 [2021-05-02 19:00:57,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:57,776 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 302 transitions. [2021-05-02 19:00:57,776 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 19:00:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 302 transitions. [2021-05-02 19:00:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 19:00:57,777 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:57,777 INFO L523 BasicCegarLoop]: trace histogram [128, 97, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:57,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:00:57,996 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:57,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1331389108, now seen corresponding path program 94 times [2021-05-02 19:00:57,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:57,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452453451] [2021-05-02 19:00:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:06,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:01:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:06,176 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 19:01:06,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:01:06,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452453451] [2021-05-02 19:01:06,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452453451] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:06,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572124093] [2021-05-02 19:01:06,177 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 19:01:06,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:01:06,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:01:06,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 19:01:06,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:01:06,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:06,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:07,917 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 19:01:07,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572124093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:07,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:01:07,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-02 19:01:07,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196392314] [2021-05-02 19:01:07,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 19:01:07,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:01:07,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 19:01:07,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 19:01:07,919 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 19:01:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:01:23,063 INFO L93 Difference]: Finished difference Result 272 states and 304 transitions. [2021-05-02 19:01:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 19:01:23,064 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 19:01:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:01:23,065 INFO L225 Difference]: With dead ends: 272 [2021-05-02 19:01:23,065 INFO L226 Difference]: Without dead ends: 272 [2021-05-02 19:01:23,066 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 22169.0ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 19:01:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-02 19:01:23,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-02 19:01:23,069 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 19:01:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 304 transitions. [2021-05-02 19:01:23,070 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 304 transitions. Word has length 269 [2021-05-02 19:01:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:01:23,070 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 304 transitions. [2021-05-02 19:01:23,070 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 19:01:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 304 transitions. [2021-05-02 19:01:23,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-05-02 19:01:23,071 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:01:23,071 INFO L523 BasicCegarLoop]: trace histogram [129, 98, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:01:23,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:01:23,283 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:01:23,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:01:23,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1594801496, now seen corresponding path program 95 times [2021-05-02 19:01:23,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:01:23,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784392933] [2021-05-02 19:01:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:01:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:35,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:01:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:35,364 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 19:01:35,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:01:35,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784392933] [2021-05-02 19:01:35,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784392933] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:35,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753305826] [2021-05-02 19:01:35,365 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 19:01:35,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2021-05-02 19:01:35,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:01:35,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 19:01:35,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:01:35,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:35,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:36,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:37,073 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 19:01:37,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753305826] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:37,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:01:37,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 19:01:37,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620368571] [2021-05-02 19:01:37,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 19:01:37,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:01:37,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 19:01:37,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 19:01:37,076 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 19:01:51,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:01:51,066 INFO L93 Difference]: Finished difference Result 274 states and 306 transitions. [2021-05-02 19:01:51,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 19:01:51,067 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 19:01:51,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:01:51,072 INFO L225 Difference]: With dead ends: 274 [2021-05-02 19:01:51,072 INFO L226 Difference]: Without dead ends: 274 [2021-05-02 19:01:51,073 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 24976.4ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 19:01:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-05-02 19:01:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-05-02 19:01:51,078 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 19:01:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 306 transitions. [2021-05-02 19:01:51,078 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 306 transitions. Word has length 271 [2021-05-02 19:01:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:01:51,078 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 306 transitions. [2021-05-02 19:01:51,079 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 19:01:51,079 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 306 transitions. [2021-05-02 19:01:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-05-02 19:01:51,081 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:01:51,081 INFO L523 BasicCegarLoop]: trace histogram [130, 99, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:01:51,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-02 19:01:51,297 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:01:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:01:51,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1331035900, now seen corresponding path program 96 times [2021-05-02 19:01:51,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:01:51,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884105391] [2021-05-02 19:01:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:01:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:01:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:58,946 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 19:01:58,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:01:58,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884105391] [2021-05-02 19:01:58,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884105391] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:58,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978021493] [2021-05-02 19:01:58,947 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 19:01:59,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-02 19:01:59,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:01:59,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 19:01:59,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:01:59,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:05,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:05,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:05,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:05,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:05,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:05,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:05,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:05,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:06,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:06,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:06,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:06,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:06,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:06,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:06,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:06,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,117 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 19:02:07,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978021493] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:07,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:02:07,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 34] total 135 [2021-05-02 19:02:07,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869518156] [2021-05-02 19:02:07,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states [2021-05-02 19:02:07,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:02:07,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-05-02 19:02:07,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 19:02:07,121 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 19:02:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:02:28,279 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2021-05-02 19:02:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-05-02 19:02:28,281 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 19:02:28,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:02:28,286 INFO L225 Difference]: With dead ends: 279 [2021-05-02 19:02:28,286 INFO L226 Difference]: Without dead ends: 279 [2021-05-02 19:02:28,288 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8745 ImplicationChecksByTransitivity, 34115.3ms TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2021-05-02 19:02:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-05-02 19:02:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2021-05-02 19:02:28,292 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 19:02:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 311 transitions. [2021-05-02 19:02:28,292 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 311 transitions. Word has length 273 [2021-05-02 19:02:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:02:28,292 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 311 transitions. [2021-05-02 19:02:28,293 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 19:02:28,293 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 311 transitions. [2021-05-02 19:02:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-02 19:02:28,293 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:02:28,294 INFO L523 BasicCegarLoop]: trace histogram [132, 100, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:02:28,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 19:02:28,511 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:02:28,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:02:28,512 INFO L82 PathProgramCache]: Analyzing trace with hash -599316133, now seen corresponding path program 97 times [2021-05-02 19:02:28,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:02:28,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199636553] [2021-05-02 19:02:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:02:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:36,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:02:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:36,541 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 19:02:36,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:02:36,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199636553] [2021-05-02 19:02:36,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199636553] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:36,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819468420] [2021-05-02 19:02:36,541 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 19:02:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:36,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 19:02:36,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:02:36,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:36,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:37,541 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 19:02:37,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819468420] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:37,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:02:37,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-02 19:02:37,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778785169] [2021-05-02 19:02:37,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 19:02:37,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:02:37,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 19:02:37,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 19:02:37,544 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 19:02:51,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:02:51,427 INFO L93 Difference]: Finished difference Result 280 states and 313 transitions. [2021-05-02 19:02:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-02 19:02:51,428 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 19:02:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:02:51,429 INFO L225 Difference]: With dead ends: 280 [2021-05-02 19:02:51,429 INFO L226 Difference]: Without dead ends: 280 [2021-05-02 19:02:51,430 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 20990.1ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 19:02:51,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-02 19:02:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-05-02 19:02:51,432 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 19:02:51,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 313 transitions. [2021-05-02 19:02:51,433 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 313 transitions. Word has length 277 [2021-05-02 19:02:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:02:51,433 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 313 transitions. [2021-05-02 19:02:51,433 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 19:02:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 313 transitions. [2021-05-02 19:02:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-05-02 19:02:51,434 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:02:51,434 INFO L523 BasicCegarLoop]: trace histogram [133, 101, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:02:51,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:02:51,634 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:02:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:02:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash 615953079, now seen corresponding path program 98 times [2021-05-02 19:02:51,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:02:51,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458400264] [2021-05-02 19:02:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:02:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:00,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:03:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 19:03:00,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:03:00,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458400264] [2021-05-02 19:03:00,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458400264] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:00,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707748412] [2021-05-02 19:03:00,636 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 19:03:00,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:03:00,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:03:00,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 19:03:00,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:03:00,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:00,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:01,909 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 19:03:01,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707748412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:01,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:03:01,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-02 19:03:01,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319724822] [2021-05-02 19:03:01,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 19:03:01,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:03:01,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 19:03:01,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 19:03:01,911 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 19:03:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:03:16,551 INFO L93 Difference]: Finished difference Result 282 states and 315 transitions. [2021-05-02 19:03:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 19:03:16,553 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 19:03:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:03:16,557 INFO L225 Difference]: With dead ends: 282 [2021-05-02 19:03:16,557 INFO L226 Difference]: Without dead ends: 282 [2021-05-02 19:03:16,559 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 22560.7ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 19:03:16,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-05-02 19:03:16,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-05-02 19:03:16,562 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 19:03:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 315 transitions. [2021-05-02 19:03:16,563 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 315 transitions. Word has length 279 [2021-05-02 19:03:16,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:03:16,563 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 315 transitions. [2021-05-02 19:03:16,563 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 19:03:16,563 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 315 transitions. [2021-05-02 19:03:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-02 19:03:16,566 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:03:16,566 INFO L523 BasicCegarLoop]: trace histogram [134, 102, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:03:16,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 19:03:16,781 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:03:16,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:03:16,781 INFO L82 PathProgramCache]: Analyzing trace with hash 258561299, now seen corresponding path program 99 times [2021-05-02 19:03:16,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:03:16,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891307022] [2021-05-02 19:03:16,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:03:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:03:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:26,892 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 19:03:26,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:03:26,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891307022] [2021-05-02 19:03:26,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891307022] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:26,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500679955] [2021-05-02 19:03:26,892 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 19:03:27,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-02 19:03:27,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:03:27,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 19:03:27,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:03:27,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:27,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:27,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:27,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:28,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:28,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:28,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:28,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:28,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:28,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:28,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:28,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:28,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:28,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:29,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:29,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:29,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:29,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:29,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:29,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:29,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:29,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:29,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:29,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:30,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:30,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:30,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:30,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:30,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:30,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:30,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:30,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:30,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:33,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:33,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:33,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:33,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:33,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:33,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:33,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:33,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:33,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:34,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:34,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:34,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:34,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:34,400 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 19:03:34,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500679955] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:34,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:03:34,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 35] total 139 [2021-05-02 19:03:34,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586127084] [2021-05-02 19:03:34,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 139 states [2021-05-02 19:03:34,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:03:34,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-05-02 19:03:34,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 19:03:34,403 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 19:03:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:03:57,639 INFO L93 Difference]: Finished difference Result 287 states and 322 transitions. [2021-05-02 19:03:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-05-02 19:03:57,640 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 19:03:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:03:57,640 INFO L225 Difference]: With dead ends: 287 [2021-05-02 19:03:57,640 INFO L226 Difference]: Without dead ends: 287 [2021-05-02 19:03:57,643 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9282 ImplicationChecksByTransitivity, 38123.5ms TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2021-05-02 19:03:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-05-02 19:03:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2021-05-02 19:03:57,644 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 19:03:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 320 transitions. [2021-05-02 19:03:57,645 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 320 transitions. Word has length 281 [2021-05-02 19:03:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:03:57,645 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 320 transitions. [2021-05-02 19:03:57,645 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 19:03:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 320 transitions. [2021-05-02 19:03:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-02 19:03:57,646 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:03:57,646 INFO L523 BasicCegarLoop]: trace histogram [136, 103, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:03:57,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 19:03:57,846 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:03:57,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:03:57,846 INFO L82 PathProgramCache]: Analyzing trace with hash -873883222, now seen corresponding path program 100 times [2021-05-02 19:03:57,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:03:57,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044952580] [2021-05-02 19:03:57,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:03:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:05,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:04:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:05,745 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 19:04:05,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:04:05,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044952580] [2021-05-02 19:04:05,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044952580] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:04:05,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838980603] [2021-05-02 19:04:05,746 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 19:04:05,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:04:05,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:04:05,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-02 19:04:05,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:04:05,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:05,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:06,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:07,092 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 19:04:07,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838980603] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:04:07,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:04:07,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-02 19:04:07,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454950261] [2021-05-02 19:04:07,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 19:04:07,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:04:07,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 19:04:07,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 19:04:07,095 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 19:04:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:04:23,112 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2021-05-02 19:04:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 19:04:23,114 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 19:04:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:04:23,114 INFO L225 Difference]: With dead ends: 288 [2021-05-02 19:04:23,114 INFO L226 Difference]: Without dead ends: 288 [2021-05-02 19:04:23,116 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 22870.7ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 19:04:23,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-05-02 19:04:23,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-05-02 19:04:23,117 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 19:04:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 322 transitions. [2021-05-02 19:04:23,118 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 322 transitions. Word has length 285 [2021-05-02 19:04:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:04:23,118 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 322 transitions. [2021-05-02 19:04:23,118 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 19:04:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 322 transitions. [2021-05-02 19:04:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-02 19:04:23,119 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:04:23,119 INFO L523 BasicCegarLoop]: trace histogram [137, 104, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:04:23,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 19:04:23,324 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:04:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:04:23,324 INFO L82 PathProgramCache]: Analyzing trace with hash 492308230, now seen corresponding path program 101 times [2021-05-02 19:04:23,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:04:23,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944692921] [2021-05-02 19:04:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:04:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:04:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:34,078 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 19:04:34,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:04:34,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944692921] [2021-05-02 19:04:34,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944692921] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:04:34,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69458263] [2021-05-02 19:04:34,079 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 19:04:34,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2021-05-02 19:04:34,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:04:34,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-02 19:04:34,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:04:34,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:34,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:35,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:36,064 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 19:04:36,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69458263] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:04:36,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:04:36,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-02 19:04:36,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975206534] [2021-05-02 19:04:36,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 19:04:36,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:04:36,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 19:04:36,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 19:04:36,066 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 19:04:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:04:49,849 INFO L93 Difference]: Finished difference Result 290 states and 324 transitions. [2021-05-02 19:04:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 19:04:49,850 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 19:04:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:04:49,851 INFO L225 Difference]: With dead ends: 290 [2021-05-02 19:04:49,851 INFO L226 Difference]: Without dead ends: 290 [2021-05-02 19:04:49,852 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 23523.0ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 19:04:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-02 19:04:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-02 19:04:49,854 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 19:04:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 324 transitions. [2021-05-02 19:04:49,854 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 324 transitions. Word has length 287 [2021-05-02 19:04:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:04:49,855 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 324 transitions. [2021-05-02 19:04:49,855 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 19:04:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 324 transitions. [2021-05-02 19:04:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-05-02 19:04:49,855 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:04:49,855 INFO L523 BasicCegarLoop]: trace histogram [138, 105, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:04:50,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:04:50,056 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:04:50,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:04:50,056 INFO L82 PathProgramCache]: Analyzing trace with hash -857698974, now seen corresponding path program 102 times [2021-05-02 19:04:50,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:04:50,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170352994] [2021-05-02 19:04:50,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:04:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:58,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:04:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:58,479 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 19:04:58,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:04:58,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170352994] [2021-05-02 19:04:58,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170352994] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:04:58,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324923052] [2021-05-02 19:04:58,479 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 19:04:58,745 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2021-05-02 19:04:58,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:04:58,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 19:04:58,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:04:59,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:59,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:59,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:59,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:59,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:59,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:59,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:59,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:00,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:01,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:02,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:03,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:04,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:05:05,280 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 19:05:05,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324923052] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:05:05,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:05:05,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 36] total 143 [2021-05-02 19:05:05,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394455296] [2021-05-02 19:05:05,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 143 states [2021-05-02 19:05:05,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:05,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-05-02 19:05:05,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 19:05:05,283 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 19:05:25,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:25,075 INFO L93 Difference]: Finished difference Result 295 states and 331 transitions. [2021-05-02 19:05:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-05-02 19:05:25,076 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 19:05:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:25,077 INFO L225 Difference]: With dead ends: 295 [2021-05-02 19:05:25,077 INFO L226 Difference]: Without dead ends: 295 [2021-05-02 19:05:25,079 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9835 ImplicationChecksByTransitivity, 32350.3ms TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2021-05-02 19:05:25,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-05-02 19:05:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-05-02 19:05:25,081 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 19:05:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 329 transitions. [2021-05-02 19:05:25,082 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 329 transitions. Word has length 289 [2021-05-02 19:05:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:25,082 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 329 transitions. [2021-05-02 19:05:25,082 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 19:05:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 329 transitions. [2021-05-02 19:05:25,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 19:05:25,083 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:25,083 INFO L523 BasicCegarLoop]: trace histogram [140, 106, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:25,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-02 19:05:25,299 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:25,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:25,300 INFO L82 PathProgramCache]: Analyzing trace with hash -407380423, now seen corresponding path program 103 times [2021-05-02 19:05:25,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:25,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290532318] [2021-05-02 19:05:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat