/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=SHALLOWEST --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/eca-rers2012/Problem16_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:56:44,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:56:44,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:56:44,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:56:44,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:56:44,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:56:44,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:56:44,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:56:44,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:56:44,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:56:44,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:56:44,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:56:44,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:56:44,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:56:44,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:56:44,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:56:44,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:56:44,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:56:44,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:56:44,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:56:44,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:56:44,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:56:44,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:56:44,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:56:44,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:56:44,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:56:44,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:56:44,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:56:44,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:56:44,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:56:44,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:56:44,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:56:44,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:56:44,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:56:44,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:56:44,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:56:44,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:56:44,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:56:44,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:56:44,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:56:44,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:56:44,831 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 [2020-10-26 23:56:44,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:56:44,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:56:44,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:56:44,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:56:44,899 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:56:44,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:56:44,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:56:44,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:56:44,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:56:44,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:56:44,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:56:44,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:56:44,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:56:44,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:56:44,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:56:44,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:56:44,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:56:44,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:56:44,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:56:44,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:56:44,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:56:44,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:56:44,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:56:44,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:56:44,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:56:44,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:56:44,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:56:44,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:56:44,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:56:44,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:56:45,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:56:45,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:56:45,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:56:45,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:56:45,414 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:56:45,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label26.c [2020-10-26 23:56:45,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1df8236f5/7911e4bff24044d28e43ce8db35758a6/FLAG706044a1a [2020-10-26 23:56:46,408 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:56:46,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label26.c [2020-10-26 23:56:46,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1df8236f5/7911e4bff24044d28e43ce8db35758a6/FLAG706044a1a [2020-10-26 23:56:46,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1df8236f5/7911e4bff24044d28e43ce8db35758a6 [2020-10-26 23:56:46,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:56:46,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:56:46,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:56:46,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:56:46,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:56:46,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:56:46" (1/1) ... [2020-10-26 23:56:46,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e281a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:46, skipping insertion in model container [2020-10-26 23:56:46,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:56:46" (1/1) ... [2020-10-26 23:56:46,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:56:46,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:56:47,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:56:47,351 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:56:47,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:56:47,652 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:56:47,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:47 WrapperNode [2020-10-26 23:56:47,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:56:47,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:56:47,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:56:47,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:56:47,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:47" (1/1) ... [2020-10-26 23:56:47,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:47" (1/1) ... [2020-10-26 23:56:47,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:47" (1/1) ... [2020-10-26 23:56:47,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:47" (1/1) ... [2020-10-26 23:56:47,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:47" (1/1) ... [2020-10-26 23:56:47,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:47" (1/1) ... [2020-10-26 23:56:47,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:47" (1/1) ... [2020-10-26 23:56:47,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:56:47,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:56:47,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:56:47,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:56:47,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:47" (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 [2020-10-26 23:56:48,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:56:48,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:56:48,029 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:56:48,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:56:48,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:56:48,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:56:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:56:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:56:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:56:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:56:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:56:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:56:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:56:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:56:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:56:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:56:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:56:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:56:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:56:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:56:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:56:50,609 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:56:50,610 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:56:50,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:56:50 BoogieIcfgContainer [2020-10-26 23:56:50,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:56:50,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:56:50,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:56:50,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:56:50,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:56:46" (1/3) ... [2020-10-26 23:56:50,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1793960b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:56:50, skipping insertion in model container [2020-10-26 23:56:50,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:47" (2/3) ... [2020-10-26 23:56:50,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1793960b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:56:50, skipping insertion in model container [2020-10-26 23:56:50,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:56:50" (3/3) ... [2020-10-26 23:56:50,622 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label26.c [2020-10-26 23:56:50,635 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:56:50,641 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:56:50,655 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:56:50,687 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:56:50,688 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:56:50,688 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:56:50,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:56:50,688 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:56:50,688 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:56:50,689 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:56:50,689 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:56:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:56:50,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 23:56:50,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:50,727 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] [2020-10-26 23:56:50,728 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:50,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:50,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1356923972, now seen corresponding path program 1 times [2020-10-26 23:56:50,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:50,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820277639] [2020-10-26 23:56:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:51,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:51,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 23:56:51,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-26 23:56:51,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:56:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:56:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-26 23:56:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:56:51,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:51,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:51,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:51,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:51,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:56:51,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:51,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:51,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:56:51,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:56:51,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820277639] [2020-10-26 23:56:51,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:56:51,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:56:51,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197567255] [2020-10-26 23:56:51,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:56:51,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:51,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:56:51,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:56:51,816 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:56:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:56,152 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-26 23:56:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:56:56,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-26 23:56:56,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:56,176 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:56:56,176 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:56:56,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:56:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:56:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-26 23:56:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-26 23:56:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-26 23:56:56,303 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 42 [2020-10-26 23:56:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:56,303 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-26 23:56:56,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:56:56,304 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-26 23:56:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-26 23:56:56,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:56,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:56,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:56:56,311 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:56,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1064025956, now seen corresponding path program 1 times [2020-10-26 23:56:56,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:56,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797032316] [2020-10-26 23:56:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:56,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:57,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:57,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:57,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:57,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-26 23:56:57,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:56:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:56:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:56:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:56:57,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:57,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:57,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:57,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:56:57,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:56:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:56:57,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:57,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:57,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:56:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 23:56:57,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:56:57,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:56:57,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797032316] [2020-10-26 23:56:57,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:56:57,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:56:57,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477307902] [2020-10-26 23:56:57,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:57,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:57,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:57,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:57,825 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-26 23:57:02,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:02,578 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-26 23:57:02,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:57:02,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-26 23:57:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:02,595 INFO L225 Difference]: With dead ends: 2090 [2020-10-26 23:57:02,595 INFO L226 Difference]: Without dead ends: 1403 [2020-10-26 23:57:02,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:57:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-26 23:57:02,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-26 23:57:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-26 23:57:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1813 transitions. [2020-10-26 23:57:02,676 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1813 transitions. Word has length 118 [2020-10-26 23:57:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:02,677 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1813 transitions. [2020-10-26 23:57:02,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1813 transitions. [2020-10-26 23:57:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-26 23:57:02,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:02,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:02,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:57:02,690 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:02,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1655476138, now seen corresponding path program 1 times [2020-10-26 23:57:02,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:02,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016985326] [2020-10-26 23:57:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:02,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:03,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:04,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:07,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:07,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-26 23:57:07,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:57:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4289 [2020-10-26 23:57:07,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:57:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-26 23:57:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:07,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:07,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:07,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:07,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:07,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:07,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:07,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:07,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:57:07,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 23:57:07,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:57:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:07,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:57:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:07,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:07,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:07,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:57:07,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:57:07,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-26 23:57:07,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:57:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:57:07,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 30 proven. 106 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:57:08,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016985326] [2020-10-26 23:57:08,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:08,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:57:08,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201515320] [2020-10-26 23:57:08,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:57:08,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:08,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:57:08,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:08,551 INFO L87 Difference]: Start difference. First operand 1379 states and 1813 transitions. Second operand 12 states. [2020-10-26 23:57:11,441 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-26 23:57:11,779 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-10-26 23:57:12,141 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-10-26 23:57:12,349 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-26 23:57:14,018 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-26 23:57:14,508 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-10-26 23:57:14,875 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-26 23:57:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:16,974 INFO L93 Difference]: Finished difference Result 3894 states and 5289 transitions. [2020-10-26 23:57:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 23:57:16,975 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 205 [2020-10-26 23:57:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:16,998 INFO L225 Difference]: With dead ends: 3894 [2020-10-26 23:57:16,998 INFO L226 Difference]: Without dead ends: 2521 [2020-10-26 23:57:17,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=293, Invalid=763, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 23:57:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2020-10-26 23:57:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2431. [2020-10-26 23:57:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-10-26 23:57:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3224 transitions. [2020-10-26 23:57:17,130 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3224 transitions. Word has length 205 [2020-10-26 23:57:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:17,133 INFO L481 AbstractCegarLoop]: Abstraction has 2431 states and 3224 transitions. [2020-10-26 23:57:17,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:57:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3224 transitions. [2020-10-26 23:57:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-26 23:57:17,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:17,145 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:17,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:57:17,146 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash 242385850, now seen corresponding path program 1 times [2020-10-26 23:57:17,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:17,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159802718] [2020-10-26 23:57:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:17,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:17,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:17,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:17,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:22,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:22,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-26 23:57:22,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:57:22,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:57:22,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:22,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:57:22,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:22,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-26 23:57:22,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:22,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:22,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:22,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:22,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:22,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:57:22,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:22,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:22,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:22,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:22,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:22,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:22,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:57:22,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-26 23:57:22,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:57:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:57:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:22,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:22,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:22,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:57:22,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:22,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-26 23:57:22,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:57:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:23,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:57:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:23,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:23,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:23,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:57:23,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:23,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:57:23,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:23,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:23,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 23:57:23,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 104 proven. 188 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-26 23:57:23,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159802718] [2020-10-26 23:57:23,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:23,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:23,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223758090] [2020-10-26 23:57:23,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:57:23,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:23,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:57:23,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:23,703 INFO L87 Difference]: Start difference. First operand 2431 states and 3224 transitions. Second operand 8 states. [2020-10-26 23:57:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:28,506 INFO L93 Difference]: Finished difference Result 5592 states and 7791 transitions. [2020-10-26 23:57:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:57:28,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 375 [2020-10-26 23:57:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:28,532 INFO L225 Difference]: With dead ends: 5592 [2020-10-26 23:57:28,533 INFO L226 Difference]: Without dead ends: 3167 [2020-10-26 23:57:28,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:57:28,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2020-10-26 23:57:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 3134. [2020-10-26 23:57:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3134 states. [2020-10-26 23:57:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 4207 transitions. [2020-10-26 23:57:28,644 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 4207 transitions. Word has length 375 [2020-10-26 23:57:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:28,645 INFO L481 AbstractCegarLoop]: Abstraction has 3134 states and 4207 transitions. [2020-10-26 23:57:28,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:57:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 4207 transitions. [2020-10-26 23:57:28,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-26 23:57:28,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:28,659 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:28,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:57:28,660 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:28,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1365833100, now seen corresponding path program 1 times [2020-10-26 23:57:28,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:28,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146497215] [2020-10-26 23:57:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:28,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:28,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:31,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:33,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:33,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-26 23:57:33,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:57:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:57:33,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:57:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 23:57:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:33,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:33,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:33,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:33,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:57:33,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:33,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:33,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:33,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:33,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:33,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:57:33,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:33,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:57:33,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:57:33,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:34,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:57:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:34,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:34,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:34,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:34,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:57:34,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:34,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-26 23:57:34,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:57:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:34,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:57:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:34,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:34,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:34,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:34,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:34,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:57:34,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:34,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:34,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:57:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:34,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:34,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-26 23:57:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:34,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:34,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:57:34,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:57:34,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:57:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 232 proven. 218 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-26 23:57:35,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146497215] [2020-10-26 23:57:35,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:35,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:35,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281723947] [2020-10-26 23:57:35,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:35,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:35,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:35,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:35,260 INFO L87 Difference]: Start difference. First operand 3134 states and 4207 transitions. Second operand 7 states. [2020-10-26 23:57:39,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:39,276 INFO L93 Difference]: Finished difference Result 6502 states and 9193 transitions. [2020-10-26 23:57:39,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:39,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 490 [2020-10-26 23:57:39,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:39,301 INFO L225 Difference]: With dead ends: 6502 [2020-10-26 23:57:39,301 INFO L226 Difference]: Without dead ends: 3275 [2020-10-26 23:57:39,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2020-10-26 23:57:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3160. [2020-10-26 23:57:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2020-10-26 23:57:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3970 transitions. [2020-10-26 23:57:39,428 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3970 transitions. Word has length 490 [2020-10-26 23:57:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:39,429 INFO L481 AbstractCegarLoop]: Abstraction has 3160 states and 3970 transitions. [2020-10-26 23:57:39,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:39,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3970 transitions. [2020-10-26 23:57:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-26 23:57:39,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:39,444 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:39,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:57:39,444 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:39,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:39,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2078247338, now seen corresponding path program 1 times [2020-10-26 23:57:39,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:39,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800382933] [2020-10-26 23:57:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:39,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:39,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-26 23:57:44,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:57:44,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:57:44,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:57:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:57:44,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:44,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:57:44,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:57:44,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 23:57:44,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:57:44,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:57:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:44,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:57:44,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:57:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:44,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:57:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:45,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:45,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:45,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:45,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:57:45,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:57:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:45,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:45,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-26 23:57:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:45,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:45,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:45,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:57:45,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:45,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:57:45,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:57:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 136 proven. 285 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-10-26 23:57:45,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800382933] [2020-10-26 23:57:45,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:45,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:45,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827834811] [2020-10-26 23:57:45,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:45,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:45,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:45,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:45,340 INFO L87 Difference]: Start difference. First operand 3160 states and 3970 transitions. Second operand 7 states. [2020-10-26 23:57:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:49,644 INFO L93 Difference]: Finished difference Result 9489 states and 12273 transitions. [2020-10-26 23:57:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:49,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-10-26 23:57:49,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:49,679 INFO L225 Difference]: With dead ends: 9489 [2020-10-26 23:57:49,679 INFO L226 Difference]: Without dead ends: 6335 [2020-10-26 23:57:49,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:49,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2020-10-26 23:57:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 5971. [2020-10-26 23:57:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5971 states. [2020-10-26 23:57:49,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5971 states to 5971 states and 7533 transitions. [2020-10-26 23:57:49,915 INFO L78 Accepts]: Start accepts. Automaton has 5971 states and 7533 transitions. Word has length 493 [2020-10-26 23:57:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:49,916 INFO L481 AbstractCegarLoop]: Abstraction has 5971 states and 7533 transitions. [2020-10-26 23:57:49,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5971 states and 7533 transitions. [2020-10-26 23:57:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-26 23:57:49,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:49,929 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:49,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:57:49,930 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:49,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:49,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1219093012, now seen corresponding path program 1 times [2020-10-26 23:57:49,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:49,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351780682] [2020-10-26 23:57:49,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:50,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:55,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:55,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-26 23:57:55,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:57:55,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-26 23:57:55,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:57:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-26 23:57:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:55,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:55,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:55,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:55,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:55,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:57:55,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:55,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:55,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:55,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:57:56,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:56,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-26 23:57:56,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:57:56,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:56,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:57:56,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,809 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-26 23:57:56,947 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-26 23:57:57,098 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-26 23:57:57,249 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-26 23:57:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-26 23:57:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:58,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:58,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:58,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:57:58,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:57:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:58,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:58,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-26 23:57:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:58,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:58,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:58,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:57:58,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:57:58,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:57:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 102 proven. 243 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-26 23:57:59,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351780682] [2020-10-26 23:57:59,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:59,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:57:59,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151270529] [2020-10-26 23:57:59,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:57:59,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:59,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:57:59,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:57:59,809 INFO L87 Difference]: Start difference. First operand 5971 states and 7533 transitions. Second operand 13 states. [2020-10-26 23:58:00,942 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2020-10-26 23:58:01,446 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-26 23:58:01,869 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2020-10-26 23:58:02,424 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 93 [2020-10-26 23:58:02,991 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 96 [2020-10-26 23:58:03,428 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 98 [2020-10-26 23:58:04,327 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2020-10-26 23:58:04,874 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-10-26 23:58:05,198 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-10-26 23:58:05,747 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-10-26 23:58:06,264 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-10-26 23:58:06,569 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 100 [2020-10-26 23:58:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:08,776 INFO L93 Difference]: Finished difference Result 11955 states and 15117 transitions. [2020-10-26 23:58:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 23:58:08,777 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 544 [2020-10-26 23:58:08,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:08,803 INFO L225 Difference]: With dead ends: 11955 [2020-10-26 23:58:08,804 INFO L226 Difference]: Without dead ends: 5898 [2020-10-26 23:58:08,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:58:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2020-10-26 23:58:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 5880. [2020-10-26 23:58:08,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5880 states. [2020-10-26 23:58:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 7435 transitions. [2020-10-26 23:58:08,957 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 7435 transitions. Word has length 544 [2020-10-26 23:58:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:08,958 INFO L481 AbstractCegarLoop]: Abstraction has 5880 states and 7435 transitions. [2020-10-26 23:58:08,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:58:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 7435 transitions. [2020-10-26 23:58:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2020-10-26 23:58:08,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:08,971 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:08,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:58:08,972 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:08,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:08,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1791495770, now seen corresponding path program 1 times [2020-10-26 23:58:08,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:08,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794614291] [2020-10-26 23:58:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:09,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:13,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:14,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:14,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 681 [2020-10-26 23:58:14,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:58:14,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:58:14,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:14,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:14,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:58:14,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:58:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:14,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:14,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:14,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:14,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:58:14,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:14,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:14,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:58:14,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:14,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 23:58:14,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:58:14,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:14,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:58:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:14,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:14,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:14,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:14,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:14,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:58:14,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:58:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:58:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:14,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:14,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:14,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:14,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:58:14,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:15,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:58:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:15,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:15,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:15,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:58:15,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:58:15,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:58:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 270 proven. 240 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2020-10-26 23:58:15,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794614291] [2020-10-26 23:58:15,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:15,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:58:15,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685205618] [2020-10-26 23:58:15,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:58:15,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:15,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:58:15,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:58:15,690 INFO L87 Difference]: Start difference. First operand 5880 states and 7435 transitions. Second operand 8 states. [2020-10-26 23:58:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:21,931 INFO L93 Difference]: Finished difference Result 16986 states and 22163 transitions. [2020-10-26 23:58:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:58:21,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 663 [2020-10-26 23:58:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:21,985 INFO L225 Difference]: With dead ends: 16986 [2020-10-26 23:58:21,985 INFO L226 Difference]: Without dead ends: 11356 [2020-10-26 23:58:22,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:58:22,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11356 states. [2020-10-26 23:58:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11356 to 11352. [2020-10-26 23:58:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11352 states. [2020-10-26 23:58:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11352 states to 11352 states and 13625 transitions. [2020-10-26 23:58:22,331 INFO L78 Accepts]: Start accepts. Automaton has 11352 states and 13625 transitions. Word has length 663 [2020-10-26 23:58:22,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:22,332 INFO L481 AbstractCegarLoop]: Abstraction has 11352 states and 13625 transitions. [2020-10-26 23:58:22,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:58:22,333 INFO L276 IsEmpty]: Start isEmpty. Operand 11352 states and 13625 transitions. [2020-10-26 23:58:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-10-26 23:58:22,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:22,356 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:22,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:58:22,356 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:22,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:22,357 INFO L82 PathProgramCache]: Analyzing trace with hash -463865542, now seen corresponding path program 1 times [2020-10-26 23:58:22,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:22,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585255997] [2020-10-26 23:58:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:22,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:26,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:26,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:27,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:27,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 809 [2020-10-26 23:58:27,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:58:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:58:27,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:27,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:58:27,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:27,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:58:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:27,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:27,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:27,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:27,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:58:27,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:27,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:27,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:27,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:28,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:28,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:28,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:28,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-26 23:58:28,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:58:28,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:28,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:28,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:28,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:58:28,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:28,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-26 23:58:28,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:58:28,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:28,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:58:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:28,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:28,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:28,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:28,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:28,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:58:28,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:28,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:28,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-26 23:58:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:28,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:28,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:58:28,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:58:28,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:58:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 145 proven. 488 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-10-26 23:58:29,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585255997] [2020-10-26 23:58:29,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:29,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:29,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325051985] [2020-10-26 23:58:29,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:29,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:29,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:29,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:29,638 INFO L87 Difference]: Start difference. First operand 11352 states and 13625 transitions. Second operand 7 states. [2020-10-26 23:58:33,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:33,601 INFO L93 Difference]: Finished difference Result 22472 states and 27042 transitions. [2020-10-26 23:58:33,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:58:33,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 791 [2020-10-26 23:58:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:33,640 INFO L225 Difference]: With dead ends: 22472 [2020-10-26 23:58:33,640 INFO L226 Difference]: Without dead ends: 11370 [2020-10-26 23:58:33,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:58:33,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11370 states. [2020-10-26 23:58:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11370 to 11352. [2020-10-26 23:58:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11352 states. [2020-10-26 23:58:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11352 states to 11352 states and 13618 transitions. [2020-10-26 23:58:33,932 INFO L78 Accepts]: Start accepts. Automaton has 11352 states and 13618 transitions. Word has length 791 [2020-10-26 23:58:33,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:33,933 INFO L481 AbstractCegarLoop]: Abstraction has 11352 states and 13618 transitions. [2020-10-26 23:58:33,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 11352 states and 13618 transitions. [2020-10-26 23:58:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2020-10-26 23:58:33,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:33,956 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:33,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:58:33,956 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:33,958 INFO L82 PathProgramCache]: Analyzing trace with hash -112234626, now seen corresponding path program 1 times [2020-10-26 23:58:33,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:33,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438419719] [2020-10-26 23:58:33,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:34,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:34,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:35,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:35,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:39,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-26 23:58:39,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:58:39,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-26 23:58:39,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:58:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:58:39,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:39,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:39,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:39,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:58:39,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:39,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:39,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:39,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:39,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:39,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:58:39,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:39,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:39,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:39,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:39,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:39,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:39,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:39,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:58:39,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:58:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:39,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:58:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:39,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:58:39,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:39,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 23:58:39,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 23:58:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:39,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-10-26 23:58:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:39,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:39,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:39,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:58:39,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:39,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:39,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-26 23:58:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:39,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:39,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:58:39,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:58:39,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:39,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:39,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:58:39,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:39,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 448 proven. 249 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2020-10-26 23:58:40,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438419719] [2020-10-26 23:58:40,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:40,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:58:40,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28392343] [2020-10-26 23:58:40,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:58:40,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:40,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:58:40,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:58:40,308 INFO L87 Difference]: Start difference. First operand 11352 states and 13618 transitions. Second operand 8 states. [2020-10-26 23:58:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:46,999 INFO L93 Difference]: Finished difference Result 28585 states and 36044 transitions. [2020-10-26 23:58:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:58:47,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 805 [2020-10-26 23:58:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:47,066 INFO L225 Difference]: With dead ends: 28585 [2020-10-26 23:58:47,066 INFO L226 Difference]: Without dead ends: 17483 [2020-10-26 23:58:47,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:58:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17483 states. [2020-10-26 23:58:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17483 to 17461. [2020-10-26 23:58:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17461 states. [2020-10-26 23:58:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17461 states to 17461 states and 22095 transitions. [2020-10-26 23:58:47,493 INFO L78 Accepts]: Start accepts. Automaton has 17461 states and 22095 transitions. Word has length 805 [2020-10-26 23:58:47,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:47,495 INFO L481 AbstractCegarLoop]: Abstraction has 17461 states and 22095 transitions. [2020-10-26 23:58:47,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:58:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 17461 states and 22095 transitions. [2020-10-26 23:58:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2020-10-26 23:58:47,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:47,525 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:47,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:58:47,526 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:47,527 INFO L82 PathProgramCache]: Analyzing trace with hash -904689956, now seen corresponding path program 1 times [2020-10-26 23:58:47,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:47,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76590741] [2020-10-26 23:58:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:47,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:48,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:49,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:52,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:52,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 890 [2020-10-26 23:58:52,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:58:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-26 23:58:52,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:58:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 493 [2020-10-26 23:58:52,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:52,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:52,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:52,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:52,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:52,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:58:52,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:52,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:52,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:53,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:53,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:58:53,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-26 23:58:53,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-26 23:58:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:53,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:58:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:53,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:53,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-26 23:58:53,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-26 23:58:53,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:58:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-26 23:58:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-26 23:58:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:54,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:54,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:54,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:58:54,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-26 23:58:54,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:58:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:54,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-26 23:58:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:54,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:54,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:54,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:54,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:58:54,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:54,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2020-10-26 23:58:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:55,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:55,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:58:55,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:58:55,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:55,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:58:55,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:55,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1533 backedges. 364 proven. 1034 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-26 23:58:57,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76590741] [2020-10-26 23:58:57,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:57,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:58:57,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112017498] [2020-10-26 23:58:57,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:58:57,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:57,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:58:57,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:58:57,039 INFO L87 Difference]: Start difference. First operand 17461 states and 22095 transitions. Second operand 11 states. [2020-10-26 23:58:57,180 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-10-26 23:58:59,405 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-26 23:59:00,808 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-26 23:59:03,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:03,370 INFO L93 Difference]: Finished difference Result 35090 states and 44455 transitions. [2020-10-26 23:59:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:59:03,372 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 870 [2020-10-26 23:59:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:03,434 INFO L225 Difference]: With dead ends: 35090 [2020-10-26 23:59:03,435 INFO L226 Difference]: Without dead ends: 17818 [2020-10-26 23:59:03,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:59:03,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17818 states. [2020-10-26 23:59:03,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17818 to 17812. [2020-10-26 23:59:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17812 states. [2020-10-26 23:59:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17812 states to 17812 states and 22491 transitions. [2020-10-26 23:59:04,045 INFO L78 Accepts]: Start accepts. Automaton has 17812 states and 22491 transitions. Word has length 870 [2020-10-26 23:59:04,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:04,046 INFO L481 AbstractCegarLoop]: Abstraction has 17812 states and 22491 transitions. [2020-10-26 23:59:04,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:59:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 17812 states and 22491 transitions. [2020-10-26 23:59:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2020-10-26 23:59:04,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:04,076 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:04,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:59:04,077 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:04,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:04,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1942709406, now seen corresponding path program 1 times [2020-10-26 23:59:04,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:04,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191207245] [2020-10-26 23:59:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:04,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:04,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 977 [2020-10-26 23:59:09,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:59:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-26 23:59:09,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:59:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:59:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:09,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:59:09,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:09,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:59:09,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:09,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:59:09,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-26 23:59:09,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:59:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:59:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:10,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:59:10,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:59:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:59:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:59:10,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:59:10,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:59:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-26 23:59:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:10,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:59:10,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-26 23:59:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:10,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:59:10,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 485 proven. 306 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-10-26 23:59:11,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191207245] [2020-10-26 23:59:11,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:11,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:11,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090524022] [2020-10-26 23:59:11,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:11,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:11,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:11,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:11,373 INFO L87 Difference]: Start difference. First operand 17812 states and 22491 transitions. Second operand 7 states. [2020-10-26 23:59:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:16,885 INFO L93 Difference]: Finished difference Result 36810 states and 46862 transitions. [2020-10-26 23:59:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:59:16,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 955 [2020-10-26 23:59:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:16,948 INFO L225 Difference]: With dead ends: 36810 [2020-10-26 23:59:16,949 INFO L226 Difference]: Without dead ends: 19587 [2020-10-26 23:59:16,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:59:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19587 states. [2020-10-26 23:59:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19587 to 19569. [2020-10-26 23:59:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19569 states. [2020-10-26 23:59:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19569 states to 19569 states and 24601 transitions. [2020-10-26 23:59:17,414 INFO L78 Accepts]: Start accepts. Automaton has 19569 states and 24601 transitions. Word has length 955 [2020-10-26 23:59:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:17,415 INFO L481 AbstractCegarLoop]: Abstraction has 19569 states and 24601 transitions. [2020-10-26 23:59:17,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 19569 states and 24601 transitions. [2020-10-26 23:59:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-10-26 23:59:17,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:17,453 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:17,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:59:17,453 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:17,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:17,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1557797112, now seen corresponding path program 1 times [2020-10-26 23:59:17,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:17,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958732443] [2020-10-26 23:59:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:17,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 988 [2020-10-26 23:59:22,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 23:59:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:59:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:59:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:22,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:22,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:22,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:22,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:59:22,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:22,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:23,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:23,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:23,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:23,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:59:23,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:23,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 23:59:23,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:59:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:23,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:59:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:23,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:23,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:23,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:23,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:23,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:59:23,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:59:23,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:23,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:59:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:23,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:23,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:59:23,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:23,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:59:23,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:23,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-26 23:59:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:23,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:23,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-26 23:59:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:23,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:23,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:23,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:23,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:59:23,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 443 proven. 254 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2020-10-26 23:59:24,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958732443] [2020-10-26 23:59:24,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:24,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:24,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797796582] [2020-10-26 23:59:24,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:24,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:24,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:24,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:24,714 INFO L87 Difference]: Start difference. First operand 19569 states and 24601 transitions. Second operand 7 states. [2020-10-26 23:59:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:30,490 INFO L93 Difference]: Finished difference Result 39568 states and 49942 transitions. [2020-10-26 23:59:30,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:59:30,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 968 [2020-10-26 23:59:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:30,550 INFO L225 Difference]: With dead ends: 39568 [2020-10-26 23:59:30,550 INFO L226 Difference]: Without dead ends: 20588 [2020-10-26 23:59:30,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:59:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20588 states. [2020-10-26 23:59:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20588 to 20582. [2020-10-26 23:59:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20582 states. [2020-10-26 23:59:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20582 states to 20582 states and 24543 transitions. [2020-10-26 23:59:31,123 INFO L78 Accepts]: Start accepts. Automaton has 20582 states and 24543 transitions. Word has length 968 [2020-10-26 23:59:31,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:31,124 INFO L481 AbstractCegarLoop]: Abstraction has 20582 states and 24543 transitions. [2020-10-26 23:59:31,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:31,124 INFO L276 IsEmpty]: Start isEmpty. Operand 20582 states and 24543 transitions. [2020-10-26 23:59:31,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-26 23:59:31,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:31,152 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:31,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:59:31,153 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:31,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:31,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2004641020, now seen corresponding path program 1 times [2020-10-26 23:59:31,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:31,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398770334] [2020-10-26 23:59:31,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:36,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:36,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-26 23:59:36,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:59:36,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:59:36,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-26 23:59:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-26 23:59:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:36,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:36,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:36,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:36,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:36,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:36,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:36,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:36,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:36,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:36,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:36,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:59:36,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:36,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:36,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:36,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:36,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:59:36,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:59:36,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:59:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:36,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:36,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:36,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:59:36,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:36,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:59:36,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 23:59:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:36,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:59:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:36,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:37,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:37,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:59:37,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-26 23:59:37,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-26 23:59:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:37,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 830 [2020-10-26 23:59:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:37,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:37,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:37,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:59:37,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:37,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 736 proven. 137 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2020-10-26 23:59:37,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398770334] [2020-10-26 23:59:37,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:37,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:37,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088991787] [2020-10-26 23:59:37,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:37,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:37,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:37,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:37,930 INFO L87 Difference]: Start difference. First operand 20582 states and 24543 transitions. Second operand 7 states. [2020-10-26 23:59:43,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:43,045 INFO L93 Difference]: Finished difference Result 42988 states and 51878 transitions. [2020-10-26 23:59:43,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:59:43,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1002 [2020-10-26 23:59:43,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:43,110 INFO L225 Difference]: With dead ends: 42988 [2020-10-26 23:59:43,111 INFO L226 Difference]: Without dead ends: 22656 [2020-10-26 23:59:43,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22656 states. [2020-10-26 23:59:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22656 to 21954. [2020-10-26 23:59:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21954 states. [2020-10-26 23:59:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21954 states to 21954 states and 26176 transitions. [2020-10-26 23:59:43,609 INFO L78 Accepts]: Start accepts. Automaton has 21954 states and 26176 transitions. Word has length 1002 [2020-10-26 23:59:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:43,610 INFO L481 AbstractCegarLoop]: Abstraction has 21954 states and 26176 transitions. [2020-10-26 23:59:43,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 21954 states and 26176 transitions. [2020-10-26 23:59:43,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2020-10-26 23:59:43,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:43,637 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:43,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:59:43,637 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:43,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:43,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1832975438, now seen corresponding path program 1 times [2020-10-26 23:59:43,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:43,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799565286] [2020-10-26 23:59:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:49,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:49,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1035 [2020-10-26 23:59:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:59:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6041 [2020-10-26 23:59:49,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:59:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 23:59:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:50,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:50,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:50,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:50,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:50,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:50,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:50,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:50,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:59:50,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:50,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:59:50,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:50,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:59:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:50,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:50,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:59:50,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:59:50,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:59:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:50,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:50,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:50,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:59:50,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:50,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:59:50,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:59:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:50,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:50,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:50,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:59:50,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:50,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:59:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:50,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:50,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:59:50,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:59:50,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:50,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:50,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:50,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:59:50,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:59:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:50,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:50,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:50,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 23:59:50,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 23:59:50,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 852 proven. 2 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2020-10-26 23:59:52,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799565286] [2020-10-26 23:59:52,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:52,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:52,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060121820] [2020-10-26 23:59:52,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:52,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:52,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:52,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:52,060 INFO L87 Difference]: Start difference. First operand 21954 states and 26176 transitions. Second operand 7 states. [2020-10-26 23:59:57,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:57,110 INFO L93 Difference]: Finished difference Result 48097 states and 57432 transitions. [2020-10-26 23:59:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:59:57,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1013 [2020-10-26 23:59:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:57,167 INFO L225 Difference]: With dead ends: 48097 [2020-10-26 23:59:57,167 INFO L226 Difference]: Without dead ends: 22459 [2020-10-26 23:59:57,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:59:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22459 states. [2020-10-26 23:59:57,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22459 to 21414. [2020-10-26 23:59:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21414 states. [2020-10-26 23:59:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21414 states to 21414 states and 23418 transitions. [2020-10-26 23:59:57,771 INFO L78 Accepts]: Start accepts. Automaton has 21414 states and 23418 transitions. Word has length 1013 [2020-10-26 23:59:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:57,772 INFO L481 AbstractCegarLoop]: Abstraction has 21414 states and 23418 transitions. [2020-10-26 23:59:57,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 21414 states and 23418 transitions. [2020-10-26 23:59:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1251 [2020-10-26 23:59:57,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:57,794 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:57,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:59:57,795 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:57,795 INFO L82 PathProgramCache]: Analyzing trace with hash -472571764, now seen corresponding path program 1 times [2020-10-26 23:59:57,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:57,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213240884] [2020-10-26 23:59:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:58,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:00,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:03,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:03,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1276 [2020-10-27 00:00:03,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:00:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-27 00:00:03,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:00:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:00:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:03,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:03,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:03,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:03,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:03,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:03,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:00:03,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:03,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:03,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:03,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:03,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:00:03,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:03,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:00:03,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:03,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:03,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:03,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:00:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:03,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:03,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:03,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:00:03,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:03,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:00:03,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:03,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:03,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:00:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:03,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:03,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:00:03,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:00:03,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:03,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:03,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:00:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:03,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:03,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:03,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:03,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:00:03,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:03,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:00:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:03,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:03,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:03,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:00:03,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:03,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:00:03,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:00:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:00:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:03,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:03,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:03,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:03,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 00:00:03,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:03,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:03,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:00:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:03,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-27 00:00:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:03,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:04,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:04,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:00:04,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-27 00:00:04,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:00:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:04,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1104 [2020-10-27 00:00:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:04,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:04,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:00:04,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:00:04,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:00:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3340 backedges. 832 proven. 223 refuted. 0 times theorem prover too weak. 2285 trivial. 0 not checked. [2020-10-27 00:00:05,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213240884] [2020-10-27 00:00:05,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:05,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:05,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743970175] [2020-10-27 00:00:05,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:05,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:05,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:05,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:05,040 INFO L87 Difference]: Start difference. First operand 21414 states and 23418 transitions. Second operand 7 states.