/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:01:49,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:01:49,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:01:49,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:01:49,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:01:49,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:01:49,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:01:49,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:01:49,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:01:49,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:01:49,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:01:49,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:01:49,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:01:49,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:01:49,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:01:49,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:01:49,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:01:49,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:01:49,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:01:49,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:01:49,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:01:49,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:01:49,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:01:49,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:01:49,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:01:49,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:01:49,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:01:49,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:01:49,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:01:49,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:01:49,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:01:49,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:01:49,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:01:49,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:01:49,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:01:49,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:01:49,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:01:49,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:01:49,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:01:49,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:01:49,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:01:49,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:01:49,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:01:49,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:01:49,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:01:49,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:01:49,863 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:01:49,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:01:49,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:01:49,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:01:49,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:01:49,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:01:49,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:01:49,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:01:49,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:01:49,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:01:49,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:01:49,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:01:49,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:01:49,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:01:49,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:01:49,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:01:49,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:01:49,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:01:49,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:01:49,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:01:49,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:01:49,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:01:49,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:01:49,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:01:49,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:01:49,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:01:50,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:01:50,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:01:50,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:01:50,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:01:50,325 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:01:50,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:01:50,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bad28aa92/a00699f7e0bf44c2a912d53d561629a3/FLAGf1370c581 [2020-10-29 14:01:51,207 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:01:51,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:01:51,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bad28aa92/a00699f7e0bf44c2a912d53d561629a3/FLAGf1370c581 [2020-10-29 14:01:51,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bad28aa92/a00699f7e0bf44c2a912d53d561629a3 [2020-10-29 14:01:51,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:01:51,410 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:01:51,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:01:51,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:01:51,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:01:51,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:01:51" (1/1) ... [2020-10-29 14:01:51,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e103ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:51, skipping insertion in model container [2020-10-29 14:01:51,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:01:51" (1/1) ... [2020-10-29 14:01:51,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:01:51,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:01:52,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:01:52,182 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:01:52,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:01:52,530 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:01:52,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:52 WrapperNode [2020-10-29 14:01:52,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:01:52,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:01:52,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:01:52,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:01:52,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:52" (1/1) ... [2020-10-29 14:01:52,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:52" (1/1) ... [2020-10-29 14:01:52,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:52" (1/1) ... [2020-10-29 14:01:52,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:52" (1/1) ... [2020-10-29 14:01:52,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:52" (1/1) ... [2020-10-29 14:01:52,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:52" (1/1) ... [2020-10-29 14:01:52,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:52" (1/1) ... [2020-10-29 14:01:52,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:01:52,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:01:52,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:01:52,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:01:52,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-29 14:01:52,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:01:52,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:01:52,775 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:01:52,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:01:52,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:01:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:01:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:01:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:01:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:01:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:01:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 14:01:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:01:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:01:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:01:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:01:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:01:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:01:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:01:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:01:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:01:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:01:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:01:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:01:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:01:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:01:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:01:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:01:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:01:54,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:01:54,566 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:01:54,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:01:54 BoogieIcfgContainer [2020-10-29 14:01:54,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:01:54,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:01:54,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:01:54,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:01:54,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:01:51" (1/3) ... [2020-10-29 14:01:54,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f888b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:01:54, skipping insertion in model container [2020-10-29 14:01:54,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:52" (2/3) ... [2020-10-29 14:01:54,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f888b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:01:54, skipping insertion in model container [2020-10-29 14:01:54,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:01:54" (3/3) ... [2020-10-29 14:01:54,579 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:01:54,592 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:01:54,598 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:01:54,613 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:01:54,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:01:54,647 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:01:54,647 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:01:54,647 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:01:54,647 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:01:54,647 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:01:54,647 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:01:54,648 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:01:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states. [2020-10-29 14:01:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 14:01:54,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:54,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:54,696 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash 50608680, now seen corresponding path program 1 times [2020-10-29 14:01:54,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:54,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127860906] [2020-10-29 14:01:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:55,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:55,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:58,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:58,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:00,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:00,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 14:02:00,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:02:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 14:02:00,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:00,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:02:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 14:02:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 14:02:00,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:02:00,854 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:00,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:00,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:00,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:00,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:00,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:00,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 14:02:00,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:00,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:00,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:00,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:00,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:00,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:00,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127860906] [2020-10-29 14:02:01,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:01,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:02:01,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130874904] [2020-10-29 14:02:01,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:02:01,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:01,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:02:01,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:02:01,025 INFO L87 Difference]: Start difference. First operand 420 states. Second operand 4 states. [2020-10-29 14:02:01,560 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 14:02:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:04,825 INFO L93 Difference]: Finished difference Result 765 states and 1345 transitions. [2020-10-29 14:02:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:02:04,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-29 14:02:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:04,858 INFO L225 Difference]: With dead ends: 765 [2020-10-29 14:02:04,858 INFO L226 Difference]: Without dead ends: 598 [2020-10-29 14:02:04,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-29 14:02:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 595. [2020-10-29 14:02:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-29 14:02:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 873 transitions. [2020-10-29 14:02:04,994 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 873 transitions. Word has length 152 [2020-10-29 14:02:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:04,998 INFO L481 AbstractCegarLoop]: Abstraction has 595 states and 873 transitions. [2020-10-29 14:02:04,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:02:04,999 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 873 transitions. [2020-10-29 14:02:05,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 14:02:05,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:05,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:05,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:02:05,008 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:05,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:05,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1619882475, now seen corresponding path program 1 times [2020-10-29 14:02:05,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:05,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691389879] [2020-10-29 14:02:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:08,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:10,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:10,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 14:02:10,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:02:10,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:02:10,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:10,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:10,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:02:10,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:02:10,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 14:02:10,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:10,572 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:10,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:10,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:10,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:10,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:02:10,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:10,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:10,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:10,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691389879] [2020-10-29 14:02:10,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:10,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:02:10,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277598031] [2020-10-29 14:02:10,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:02:10,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:10,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:02:10,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:02:10,676 INFO L87 Difference]: Start difference. First operand 595 states and 873 transitions. Second operand 4 states. [2020-10-29 14:02:11,117 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 14:02:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:13,718 INFO L93 Difference]: Finished difference Result 1213 states and 1835 transitions. [2020-10-29 14:02:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:02:13,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-29 14:02:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:13,736 INFO L225 Difference]: With dead ends: 1213 [2020-10-29 14:02:13,736 INFO L226 Difference]: Without dead ends: 990 [2020-10-29 14:02:13,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-10-29 14:02:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 987. [2020-10-29 14:02:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 987 states. [2020-10-29 14:02:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1470 transitions. [2020-10-29 14:02:13,839 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1470 transitions. Word has length 152 [2020-10-29 14:02:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:13,840 INFO L481 AbstractCegarLoop]: Abstraction has 987 states and 1470 transitions. [2020-10-29 14:02:13,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:02:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1470 transitions. [2020-10-29 14:02:13,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 14:02:13,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:13,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:13,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:02:13,848 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:13,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:13,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1630379540, now seen corresponding path program 1 times [2020-10-29 14:02:13,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:13,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241169362] [2020-10-29 14:02:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:14,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:14,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:14,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:14,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:15,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:16,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:16,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:18,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:18,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:18,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:18,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 14:02:18,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:02:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:02:18,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:18,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 14:02:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:19,450 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:19,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:19,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:19,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:19,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:19,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:02:19,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:19,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:19,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:19,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241169362] [2020-10-29 14:02:19,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:19,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:19,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818449676] [2020-10-29 14:02:19,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:19,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:19,571 INFO L87 Difference]: Start difference. First operand 987 states and 1470 transitions. Second operand 5 states. [2020-10-29 14:02:22,486 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:02:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:23,941 INFO L93 Difference]: Finished difference Result 2867 states and 4255 transitions. [2020-10-29 14:02:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:23,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-29 14:02:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:23,952 INFO L225 Difference]: With dead ends: 2867 [2020-10-29 14:02:23,952 INFO L226 Difference]: Without dead ends: 1897 [2020-10-29 14:02:23,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2020-10-29 14:02:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1870. [2020-10-29 14:02:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2020-10-29 14:02:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2757 transitions. [2020-10-29 14:02:24,050 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2757 transitions. Word has length 152 [2020-10-29 14:02:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:24,050 INFO L481 AbstractCegarLoop]: Abstraction has 1870 states and 2757 transitions. [2020-10-29 14:02:24,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:24,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2757 transitions. [2020-10-29 14:02:24,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 14:02:24,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:24,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:24,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:02:24,056 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:24,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1839557494, now seen corresponding path program 1 times [2020-10-29 14:02:24,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:24,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395574333] [2020-10-29 14:02:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:24,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:24,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:24,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:24,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:26,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:29,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:29,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 14:02:29,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:02:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 14:02:29,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:29,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 14:02:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:29,754 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:29,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:29,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:29,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:29,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:29,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:29,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:02:29,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:29,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:29,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395574333] [2020-10-29 14:02:29,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:29,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:29,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977610291] [2020-10-29 14:02:29,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:29,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:29,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:29,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:29,870 INFO L87 Difference]: Start difference. First operand 1870 states and 2757 transitions. Second operand 5 states. [2020-10-29 14:02:32,497 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:02:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:33,980 INFO L93 Difference]: Finished difference Result 5443 states and 7994 transitions. [2020-10-29 14:02:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:33,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-29 14:02:33,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:33,999 INFO L225 Difference]: With dead ends: 5443 [2020-10-29 14:02:33,999 INFO L226 Difference]: Without dead ends: 3607 [2020-10-29 14:02:34,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2020-10-29 14:02:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3546. [2020-10-29 14:02:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-10-29 14:02:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 5167 transitions. [2020-10-29 14:02:34,166 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 5167 transitions. Word has length 153 [2020-10-29 14:02:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:34,168 INFO L481 AbstractCegarLoop]: Abstraction has 3546 states and 5167 transitions. [2020-10-29 14:02:34,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 5167 transitions. [2020-10-29 14:02:34,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 14:02:34,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:34,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:34,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:02:34,175 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:34,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:34,175 INFO L82 PathProgramCache]: Analyzing trace with hash 473349870, now seen corresponding path program 1 times [2020-10-29 14:02:34,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:34,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109260768] [2020-10-29 14:02:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:34,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:35,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:37,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:39,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 14:02:39,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:02:39,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 14:02:39,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:39,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:39,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:39,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 14:02:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:02:39,766 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:39,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:39,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:39,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:39,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:02:39,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:39,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:39,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109260768] [2020-10-29 14:02:39,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:39,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:39,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804043108] [2020-10-29 14:02:39,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:39,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:39,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:39,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:39,868 INFO L87 Difference]: Start difference. First operand 3546 states and 5167 transitions. Second operand 5 states. [2020-10-29 14:02:42,843 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:02:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:44,300 INFO L93 Difference]: Finished difference Result 9681 states and 14050 transitions. [2020-10-29 14:02:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:44,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-29 14:02:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:44,331 INFO L225 Difference]: With dead ends: 9681 [2020-10-29 14:02:44,332 INFO L226 Difference]: Without dead ends: 6174 [2020-10-29 14:02:44,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2020-10-29 14:02:44,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 6113. [2020-10-29 14:02:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6113 states. [2020-10-29 14:02:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6113 states to 6113 states and 8793 transitions. [2020-10-29 14:02:44,635 INFO L78 Accepts]: Start accepts. Automaton has 6113 states and 8793 transitions. Word has length 154 [2020-10-29 14:02:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:44,636 INFO L481 AbstractCegarLoop]: Abstraction has 6113 states and 8793 transitions. [2020-10-29 14:02:44,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 6113 states and 8793 transitions. [2020-10-29 14:02:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 14:02:44,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:44,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:44,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:02:44,647 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:44,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1225667383, now seen corresponding path program 1 times [2020-10-29 14:02:44,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:44,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760653072] [2020-10-29 14:02:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:46,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:49,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:49,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:49,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 14:02:49,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:02:49,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:02:49,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:49,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:49,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:49,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 14:02:49,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:50,203 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:50,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:50,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:50,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:50,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:50,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:02:50,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:50,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:50,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760653072] [2020-10-29 14:02:50,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:50,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:50,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113099767] [2020-10-29 14:02:50,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:50,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:50,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:50,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:50,314 INFO L87 Difference]: Start difference. First operand 6113 states and 8793 transitions. Second operand 5 states. [2020-10-29 14:02:53,261 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:02:54,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:54,909 INFO L93 Difference]: Finished difference Result 17648 states and 25299 transitions. [2020-10-29 14:02:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:54,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-29 14:02:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:54,974 INFO L225 Difference]: With dead ends: 17648 [2020-10-29 14:02:54,975 INFO L226 Difference]: Without dead ends: 11760 [2020-10-29 14:02:54,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11760 states. [2020-10-29 14:02:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11760 to 11699. [2020-10-29 14:02:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11699 states. [2020-10-29 14:02:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11699 states to 11699 states and 16605 transitions. [2020-10-29 14:02:55,637 INFO L78 Accepts]: Start accepts. Automaton has 11699 states and 16605 transitions. Word has length 155 [2020-10-29 14:02:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:55,637 INFO L481 AbstractCegarLoop]: Abstraction has 11699 states and 16605 transitions. [2020-10-29 14:02:55,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:55,637 INFO L276 IsEmpty]: Start isEmpty. Operand 11699 states and 16605 transitions. [2020-10-29 14:02:55,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 14:02:55,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:55,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:55,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:02:55,657 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:55,658 INFO L82 PathProgramCache]: Analyzing trace with hash -2144675536, now seen corresponding path program 1 times [2020-10-29 14:02:55,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:55,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003370294] [2020-10-29 14:02:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:00,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:00,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 14:03:00,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:03:00,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:03:00,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:00,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:00,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:00,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:00,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 14:03:00,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:01,186 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:03:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:01,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:01,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:01,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:01,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:03:01,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:01,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:01,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:01,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003370294] [2020-10-29 14:03:01,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:01,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:01,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677492596] [2020-10-29 14:03:01,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:01,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:01,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:01,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:01,254 INFO L87 Difference]: Start difference. First operand 11699 states and 16605 transitions. Second operand 5 states. [2020-10-29 14:03:04,291 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:06,190 INFO L93 Difference]: Finished difference Result 33834 states and 47901 transitions. [2020-10-29 14:03:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:06,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-29 14:03:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:06,242 INFO L225 Difference]: With dead ends: 33834 [2020-10-29 14:03:06,243 INFO L226 Difference]: Without dead ends: 22564 [2020-10-29 14:03:06,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:06,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22564 states. [2020-10-29 14:03:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22564 to 22503. [2020-10-29 14:03:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22503 states. [2020-10-29 14:03:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22503 states to 22503 states and 31499 transitions. [2020-10-29 14:03:07,163 INFO L78 Accepts]: Start accepts. Automaton has 22503 states and 31499 transitions. Word has length 156 [2020-10-29 14:03:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:07,163 INFO L481 AbstractCegarLoop]: Abstraction has 22503 states and 31499 transitions. [2020-10-29 14:03:07,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand 22503 states and 31499 transitions. [2020-10-29 14:03:07,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 14:03:07,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:07,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:07,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:03:07,199 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:07,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:07,199 INFO L82 PathProgramCache]: Analyzing trace with hash -507085495, now seen corresponding path program 1 times [2020-10-29 14:03:07,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:07,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044320030] [2020-10-29 14:03:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:07,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:07,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:12,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 14:03:12,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:03:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 14:03:12,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:12,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:03:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 14:03:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:12,786 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:03:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:12,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:12,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:12,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:12,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:03:12,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:12,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:12,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044320030] [2020-10-29 14:03:12,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:12,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:12,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572903577] [2020-10-29 14:03:12,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:12,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:12,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:12,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:12,972 INFO L87 Difference]: Start difference. First operand 22503 states and 31499 transitions. Second operand 5 states. [2020-10-29 14:03:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:16,007 INFO L93 Difference]: Finished difference Result 41767 states and 58496 transitions. [2020-10-29 14:03:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:16,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-29 14:03:16,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:16,050 INFO L225 Difference]: With dead ends: 41767 [2020-10-29 14:03:16,050 INFO L226 Difference]: Without dead ends: 19359 [2020-10-29 14:03:16,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:03:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19359 states. [2020-10-29 14:03:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19359 to 19359. [2020-10-29 14:03:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19359 states. [2020-10-29 14:03:16,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19359 states to 19359 states and 27120 transitions. [2020-10-29 14:03:16,965 INFO L78 Accepts]: Start accepts. Automaton has 19359 states and 27120 transitions. Word has length 157 [2020-10-29 14:03:16,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:16,966 INFO L481 AbstractCegarLoop]: Abstraction has 19359 states and 27120 transitions. [2020-10-29 14:03:16,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand 19359 states and 27120 transitions. [2020-10-29 14:03:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 14:03:16,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:16,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:16,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:03:16,989 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:16,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:16,989 INFO L82 PathProgramCache]: Analyzing trace with hash 486936411, now seen corresponding path program 1 times [2020-10-29 14:03:16,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:16,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417765204] [2020-10-29 14:03:16,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:17,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:17,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:22,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:22,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 14:03:22,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:03:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:03:22,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:22,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:03:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:03:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 14:03:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:22,649 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:03:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:22,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:22,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:22,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 14:03:22,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:22,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:03:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:03:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:22,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417765204] [2020-10-29 14:03:22,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:22,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:03:22,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856596885] [2020-10-29 14:03:22,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:03:22,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:22,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:03:22,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:03:22,759 INFO L87 Difference]: Start difference. First operand 19359 states and 27120 transitions. Second operand 9 states. [2020-10-29 14:03:23,301 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:26,067 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:03:26,618 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:03:29,367 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-29 14:03:29,912 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:03:31,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:31,367 INFO L93 Difference]: Finished difference Result 64639 states and 94954 transitions. [2020-10-29 14:03:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:03:31,368 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2020-10-29 14:03:31,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:31,472 INFO L225 Difference]: With dead ends: 64639 [2020-10-29 14:03:31,472 INFO L226 Difference]: Without dead ends: 47826 [2020-10-29 14:03:31,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:03:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47826 states. [2020-10-29 14:03:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47826 to 26991. [2020-10-29 14:03:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26991 states. [2020-10-29 14:03:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26991 states to 26991 states and 38312 transitions. [2020-10-29 14:03:33,954 INFO L78 Accepts]: Start accepts. Automaton has 26991 states and 38312 transitions. Word has length 159 [2020-10-29 14:03:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:33,955 INFO L481 AbstractCegarLoop]: Abstraction has 26991 states and 38312 transitions. [2020-10-29 14:03:33,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:03:33,955 INFO L276 IsEmpty]: Start isEmpty. Operand 26991 states and 38312 transitions. [2020-10-29 14:03:33,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 14:03:33,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:33,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:33,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:03:33,978 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:33,978 INFO L82 PathProgramCache]: Analyzing trace with hash -479763650, now seen corresponding path program 1 times [2020-10-29 14:03:33,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:33,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407118454] [2020-10-29 14:03:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:34,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:39,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:39,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 14:03:39,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:03:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 14:03:39,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:39,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 14:03:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:39,558 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:03:39,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:39,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:39,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:39,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:03:39,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:39,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:39,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:39,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407118454] [2020-10-29 14:03:39,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:39,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:39,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247231874] [2020-10-29 14:03:39,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:39,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:39,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:39,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:39,632 INFO L87 Difference]: Start difference. First operand 26991 states and 38312 transitions. Second operand 5 states. [2020-10-29 14:03:42,558 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:03:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:45,146 INFO L93 Difference]: Finished difference Result 67715 states and 95996 transitions. [2020-10-29 14:03:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:45,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-29 14:03:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:45,201 INFO L225 Difference]: With dead ends: 67715 [2020-10-29 14:03:45,201 INFO L226 Difference]: Without dead ends: 41750 [2020-10-29 14:03:45,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41750 states. [2020-10-29 14:03:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41750 to 41718. [2020-10-29 14:03:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41718 states. [2020-10-29 14:03:48,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41718 states to 41718 states and 58192 transitions. [2020-10-29 14:03:48,471 INFO L78 Accepts]: Start accepts. Automaton has 41718 states and 58192 transitions. Word has length 159 [2020-10-29 14:03:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:48,471 INFO L481 AbstractCegarLoop]: Abstraction has 41718 states and 58192 transitions. [2020-10-29 14:03:48,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 41718 states and 58192 transitions. [2020-10-29 14:03:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 14:03:48,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:48,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:48,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:03:48,497 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:48,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:48,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1933945021, now seen corresponding path program 1 times [2020-10-29 14:03:48,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:48,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175800026] [2020-10-29 14:03:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:48,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:48,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:48,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:53,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:53,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 14:03:53,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:03:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:03:53,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:53,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 14:03:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:03:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:54,118 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:03:54,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:54,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:54,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:54,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:54,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:03:54,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:54,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:54,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:54,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175800026] [2020-10-29 14:03:54,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:54,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:54,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18878842] [2020-10-29 14:03:54,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:54,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:54,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:54,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:54,187 INFO L87 Difference]: Start difference. First operand 41718 states and 58192 transitions. Second operand 5 states. [2020-10-29 14:03:57,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:57,851 INFO L93 Difference]: Finished difference Result 68768 states and 95872 transitions. [2020-10-29 14:03:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:57,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-29 14:03:57,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:57,884 INFO L225 Difference]: With dead ends: 68768 [2020-10-29 14:03:57,884 INFO L226 Difference]: Without dead ends: 27529 [2020-10-29 14:03:57,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:03:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27529 states. [2020-10-29 14:03:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27529 to 27527. [2020-10-29 14:03:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27527 states. [2020-10-29 14:03:59,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27527 states to 27527 states and 38225 transitions. [2020-10-29 14:03:59,756 INFO L78 Accepts]: Start accepts. Automaton has 27527 states and 38225 transitions. Word has length 161 [2020-10-29 14:03:59,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:59,757 INFO L481 AbstractCegarLoop]: Abstraction has 27527 states and 38225 transitions. [2020-10-29 14:03:59,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:59,757 INFO L276 IsEmpty]: Start isEmpty. Operand 27527 states and 38225 transitions. [2020-10-29 14:03:59,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 14:03:59,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:59,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:59,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:03:59,772 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:59,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:59,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1555958842, now seen corresponding path program 1 times [2020-10-29 14:03:59,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:59,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280356686] [2020-10-29 14:03:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:00,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:04,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:04,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 14:04:04,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:04:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:04:04,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:04,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:04:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:04:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 14:04:04,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:05,391 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:04:05,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:05,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:05,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:05,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:05,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:05,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:04:05,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:05,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:04:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:04:05,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:05,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280356686] [2020-10-29 14:04:05,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:05,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:04:05,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524732770] [2020-10-29 14:04:05,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:04:05,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:05,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:04:05,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:04:05,472 INFO L87 Difference]: Start difference. First operand 27527 states and 38225 transitions. Second operand 9 states. [2020-10-29 14:04:06,020 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:04:09,086 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:04:09,640 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:04:12,174 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:04:12,917 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-29 14:04:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:16,692 INFO L93 Difference]: Finished difference Result 108756 states and 155598 transitions. [2020-10-29 14:04:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:04:16,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-10-29 14:04:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:16,815 INFO L225 Difference]: With dead ends: 108756 [2020-10-29 14:04:16,815 INFO L226 Difference]: Without dead ends: 82544 [2020-10-29 14:04:16,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:04:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82544 states. [2020-10-29 14:04:20,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82544 to 36311. [2020-10-29 14:04:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36311 states. [2020-10-29 14:04:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36311 states to 36311 states and 50494 transitions. [2020-10-29 14:04:20,197 INFO L78 Accepts]: Start accepts. Automaton has 36311 states and 50494 transitions. Word has length 165 [2020-10-29 14:04:20,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:20,198 INFO L481 AbstractCegarLoop]: Abstraction has 36311 states and 50494 transitions. [2020-10-29 14:04:20,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:04:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 36311 states and 50494 transitions. [2020-10-29 14:04:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 14:04:20,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:20,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:20,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:04:20,211 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:20,211 INFO L82 PathProgramCache]: Analyzing trace with hash 130153689, now seen corresponding path program 1 times [2020-10-29 14:04:20,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:20,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200250493] [2020-10-29 14:04:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:20,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:20,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:20,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:25,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:25,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 14:04:25,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:04:25,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 14:04:25,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:25,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 14:04:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 14:04:25,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:25,762 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:04:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:25,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:25,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:25,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:25,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:25,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:04:25,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:25,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:25,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:25,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200250493] [2020-10-29 14:04:25,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:25,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:25,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868720219] [2020-10-29 14:04:25,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:25,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:25,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:25,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:25,807 INFO L87 Difference]: Start difference. First operand 36311 states and 50494 transitions. Second operand 5 states. [2020-10-29 14:04:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:29,920 INFO L93 Difference]: Finished difference Result 57644 states and 80509 transitions. [2020-10-29 14:04:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:04:29,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-29 14:04:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:29,960 INFO L225 Difference]: With dead ends: 57644 [2020-10-29 14:04:29,961 INFO L226 Difference]: Without dead ends: 32668 [2020-10-29 14:04:29,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:04:30,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32668 states. [2020-10-29 14:04:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32668 to 32666. [2020-10-29 14:04:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32666 states. [2020-10-29 14:04:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32666 states to 32666 states and 45410 transitions. [2020-10-29 14:04:32,625 INFO L78 Accepts]: Start accepts. Automaton has 32666 states and 45410 transitions. Word has length 165 [2020-10-29 14:04:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:32,626 INFO L481 AbstractCegarLoop]: Abstraction has 32666 states and 45410 transitions. [2020-10-29 14:04:32,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 32666 states and 45410 transitions. [2020-10-29 14:04:32,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 14:04:32,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:32,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:32,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:04:32,643 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:32,644 INFO L82 PathProgramCache]: Analyzing trace with hash 618312908, now seen corresponding path program 1 times [2020-10-29 14:04:32,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:32,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76935312] [2020-10-29 14:04:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:32,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:32,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:33,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:36,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:36,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 14:04:36,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:04:36,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3500 [2020-10-29 14:04:36,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:36,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:04:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 14:04:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 14:04:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:36,663 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:04:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:36,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:36,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:36,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:36,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:04:36,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:36,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:36,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:36,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:36,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:36,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76935312] [2020-10-29 14:04:36,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:36,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:04:36,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032969451] [2020-10-29 14:04:36,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:04:36,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:36,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:04:36,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:04:36,734 INFO L87 Difference]: Start difference. First operand 32666 states and 45410 transitions. Second operand 4 states. [2020-10-29 14:04:41,209 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-29 14:04:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:43,522 INFO L93 Difference]: Finished difference Result 77694 states and 109656 transitions. [2020-10-29 14:04:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:04:43,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-29 14:04:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:43,579 INFO L225 Difference]: With dead ends: 77694 [2020-10-29 14:04:43,579 INFO L226 Difference]: Without dead ends: 46834 [2020-10-29 14:04:43,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:43,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46834 states. [2020-10-29 14:04:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46834 to 42323. [2020-10-29 14:04:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42323 states. [2020-10-29 14:04:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42323 states to 42323 states and 60260 transitions. [2020-10-29 14:04:47,467 INFO L78 Accepts]: Start accepts. Automaton has 42323 states and 60260 transitions. Word has length 166 [2020-10-29 14:04:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:47,468 INFO L481 AbstractCegarLoop]: Abstraction has 42323 states and 60260 transitions. [2020-10-29 14:04:47,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:04:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 42323 states and 60260 transitions. [2020-10-29 14:04:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 14:04:47,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:47,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:47,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:04:47,488 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:47,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:47,488 INFO L82 PathProgramCache]: Analyzing trace with hash -222868960, now seen corresponding path program 1 times [2020-10-29 14:04:47,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:47,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158254382] [2020-10-29 14:04:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:47,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:52,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:52,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 14:04:52,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:04:52,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:04:52,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:52,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:52,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:52,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 14:04:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 14:04:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:53,013 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:04:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:53,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:53,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:53,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:53,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:04:53,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:53,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:53,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158254382] [2020-10-29 14:04:53,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:53,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:53,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545628468] [2020-10-29 14:04:53,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:53,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:53,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:53,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:53,074 INFO L87 Difference]: Start difference. First operand 42323 states and 60260 transitions. Second operand 5 states. [2020-10-29 14:04:53,568 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 14:04:56,762 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-29 14:05:05,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:05,952 INFO L93 Difference]: Finished difference Result 143764 states and 210564 transitions. [2020-10-29 14:05:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:05:05,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-29 14:05:05,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:06,115 INFO L225 Difference]: With dead ends: 143764 [2020-10-29 14:05:06,115 INFO L226 Difference]: Without dead ends: 111446 [2020-10-29 14:05:06,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:05:06,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111446 states. [2020-10-29 14:05:15,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111446 to 111440. [2020-10-29 14:05:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111440 states. [2020-10-29 14:05:16,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111440 states to 111440 states and 161311 transitions. [2020-10-29 14:05:16,135 INFO L78 Accepts]: Start accepts. Automaton has 111440 states and 161311 transitions. Word has length 169 [2020-10-29 14:05:16,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:16,135 INFO L481 AbstractCegarLoop]: Abstraction has 111440 states and 161311 transitions. [2020-10-29 14:05:16,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:05:16,135 INFO L276 IsEmpty]: Start isEmpty. Operand 111440 states and 161311 transitions. [2020-10-29 14:05:16,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 14:05:16,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:16,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:05:16,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:05:16,156 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:16,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:16,156 INFO L82 PathProgramCache]: Analyzing trace with hash 858460208, now seen corresponding path program 1 times [2020-10-29 14:05:16,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:16,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925882064] [2020-10-29 14:05:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:16,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:16,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:16,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking...