/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:54:29,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:54:29,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:54:29,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:54:29,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:54:29,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:54:29,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:54:29,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:54:29,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:54:29,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:54:29,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:54:29,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:54:29,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:54:29,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:54:29,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:54:29,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:54:29,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:54:29,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:54:29,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:54:29,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:54:29,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:54:29,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:54:29,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:54:29,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:54:29,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:54:29,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:54:29,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:54:29,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:54:29,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:54:29,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:54:29,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:54:29,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:54:29,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:54:29,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:54:29,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:54:29,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:54:29,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:54:29,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:54:29,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:54:29,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:54:29,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:54:29,794 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:54:29,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:54:29,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:54:29,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:54:29,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:54:29,862 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:54:29,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:54:29,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:54:29,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:54:29,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:54:29,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:54:29,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:54:29,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:54:29,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:54:29,867 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:54:29,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:54:29,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:54:29,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:54:29,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:54:29,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:54:29,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:54:29,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:54:29,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:54:29,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:54:29,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:54:29,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:54:29,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:54:29,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:54:29,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:54:29,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:54:29,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:54:30,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:54:30,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:54:30,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:54:30,422 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:54:30,423 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:54:30,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58.c [2020-10-29 07:54:30,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa135c062/d2a971484610436cbe1142bc0a6b38eb/FLAG17fb7b658 [2020-10-29 07:54:31,498 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:54:31,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label58.c [2020-10-29 07:54:31,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa135c062/d2a971484610436cbe1142bc0a6b38eb/FLAG17fb7b658 [2020-10-29 07:54:31,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa135c062/d2a971484610436cbe1142bc0a6b38eb [2020-10-29 07:54:31,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:54:31,644 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:54:31,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:54:31,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:54:31,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:54:31,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:54:31" (1/1) ... [2020-10-29 07:54:31,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb0b7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:31, skipping insertion in model container [2020-10-29 07:54:31,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:54:31" (1/1) ... [2020-10-29 07:54:31,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:54:31,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:54:32,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:54:32,675 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:54:33,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:54:33,063 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:54:33,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:33 WrapperNode [2020-10-29 07:54:33,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:54:33,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:54:33,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:54:33,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:54:33,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:33" (1/1) ... [2020-10-29 07:54:33,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:33" (1/1) ... [2020-10-29 07:54:33,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:33" (1/1) ... [2020-10-29 07:54:33,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:33" (1/1) ... [2020-10-29 07:54:33,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:33" (1/1) ... [2020-10-29 07:54:33,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:33" (1/1) ... [2020-10-29 07:54:33,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:33" (1/1) ... [2020-10-29 07:54:33,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:54:33,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:54:33,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:54:33,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:54:33,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:54:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:54:33,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:54:33,467 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:54:33,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:54:33,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:54:33,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:54:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:54:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:54:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:54:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:54:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:54:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:54:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:54:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:54:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:54:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:54:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:54:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:54:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:54:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:54:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:54:37,435 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:54:37,435 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:54:37,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:54:37 BoogieIcfgContainer [2020-10-29 07:54:37,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:54:37,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:54:37,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:54:37,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:54:37,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:54:31" (1/3) ... [2020-10-29 07:54:37,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcb88f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:54:37, skipping insertion in model container [2020-10-29 07:54:37,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:33" (2/3) ... [2020-10-29 07:54:37,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcb88f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:54:37, skipping insertion in model container [2020-10-29 07:54:37,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:54:37" (3/3) ... [2020-10-29 07:54:37,458 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label58.c [2020-10-29 07:54:37,475 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:54:37,483 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:54:37,500 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:54:37,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:54:37,557 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:54:37,557 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:54:37,557 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:54:37,558 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:54:37,558 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:54:37,558 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:54:37,558 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:54:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:54:37,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 07:54:37,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:37,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:54:37,625 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:37,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:37,635 INFO L82 PathProgramCache]: Analyzing trace with hash 580243343, now seen corresponding path program 1 times [2020-10-29 07:54:37,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:37,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744334671] [2020-10-29 07:54:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:38,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:38,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 07:54:38,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-29 07:54:38,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:38,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:38,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:54:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:54:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 07:54:38,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:54:38,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:38,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:38,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:38,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:38,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:38,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:54:38,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:38,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:38,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:38,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:54:38,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:54:38,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744334671] [2020-10-29 07:54:38,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:54:38,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:54:38,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514685107] [2020-10-29 07:54:38,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:54:38,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:38,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:54:38,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:54:38,990 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-29 07:54:51,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:51,649 INFO L93 Difference]: Finished difference Result 1522 states and 2792 transitions. [2020-10-29 07:54:51,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:54:51,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-29 07:54:51,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:51,678 INFO L225 Difference]: With dead ends: 1522 [2020-10-29 07:54:51,678 INFO L226 Difference]: Without dead ends: 1011 [2020-10-29 07:54:51,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:51,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-29 07:54:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2020-10-29 07:54:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-29 07:54:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1380 transitions. [2020-10-29 07:54:51,866 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1380 transitions. Word has length 57 [2020-10-29 07:54:51,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:51,867 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1380 transitions. [2020-10-29 07:54:51,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:54:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1380 transitions. [2020-10-29 07:54:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 07:54:51,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:51,875 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, 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] [2020-10-29 07:54:51,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:54:51,875 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:51,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1681156359, now seen corresponding path program 1 times [2020-10-29 07:54:51,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:51,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619619916] [2020-10-29 07:54:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:51,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:52,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:55,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:55,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 07:54:55,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:54:55,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3535 [2020-10-29 07:54:55,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:55,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:54:55,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 07:54:55,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:54:55,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:55,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:55,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:55,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:55,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:54:55,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:55,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:55,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:55,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:54:55,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:55,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:55,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:55,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:54:55,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 07:54:55,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:55,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:54:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:54:56,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619619916] [2020-10-29 07:54:56,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:56,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:54:56,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226353324] [2020-10-29 07:54:56,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:54:56,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:56,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:54:56,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:54:56,039 INFO L87 Difference]: Start difference. First operand 1001 states and 1380 transitions. Second operand 5 states. [2020-10-29 07:55:04,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:04,366 INFO L93 Difference]: Finished difference Result 2022 states and 2978 transitions. [2020-10-29 07:55:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:55:04,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-29 07:55:04,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:04,379 INFO L225 Difference]: With dead ends: 2022 [2020-10-29 07:55:04,380 INFO L226 Difference]: Without dead ends: 1336 [2020-10-29 07:55:04,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:55:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2020-10-29 07:55:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1330. [2020-10-29 07:55:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-10-29 07:55:04,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1832 transitions. [2020-10-29 07:55:04,455 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1832 transitions. Word has length 126 [2020-10-29 07:55:04,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:04,456 INFO L481 AbstractCegarLoop]: Abstraction has 1330 states and 1832 transitions. [2020-10-29 07:55:04,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:55:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1832 transitions. [2020-10-29 07:55:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 07:55:04,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:04,461 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, 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] [2020-10-29 07:55:04,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:55:04,462 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:04,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:04,463 INFO L82 PathProgramCache]: Analyzing trace with hash -545392480, now seen corresponding path program 1 times [2020-10-29 07:55:04,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:04,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723884924] [2020-10-29 07:55:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:05,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:05,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 07:55:05,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1374 [2020-10-29 07:55:05,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:05,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:55:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:06,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:06,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:06,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:06,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:06,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:55:06,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:06,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:06,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:06,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:55:06,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 07:55:06,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:06,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:55:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:06,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723884924] [2020-10-29 07:55:06,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:55:06,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:55:06,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251154020] [2020-10-29 07:55:06,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:06,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:06,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:06,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:06,637 INFO L87 Difference]: Start difference. First operand 1330 states and 1832 transitions. Second operand 7 states. [2020-10-29 07:55:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:18,621 INFO L93 Difference]: Finished difference Result 3934 states and 5463 transitions. [2020-10-29 07:55:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:55:18,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-29 07:55:18,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:18,639 INFO L225 Difference]: With dead ends: 3934 [2020-10-29 07:55:18,640 INFO L226 Difference]: Without dead ends: 2610 [2020-10-29 07:55:18,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:55:18,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2020-10-29 07:55:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2591. [2020-10-29 07:55:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2591 states. [2020-10-29 07:55:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3233 transitions. [2020-10-29 07:55:18,737 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3233 transitions. Word has length 142 [2020-10-29 07:55:18,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:18,738 INFO L481 AbstractCegarLoop]: Abstraction has 2591 states and 3233 transitions. [2020-10-29 07:55:18,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3233 transitions. [2020-10-29 07:55:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-29 07:55:18,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:18,756 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:55:18,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:55:18,757 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:18,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1680351851, now seen corresponding path program 1 times [2020-10-29 07:55:18,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:18,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326652404] [2020-10-29 07:55:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:19,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:20,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:23,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:23,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:23,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-29 07:55:23,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 07:55:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 07:55:23,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:23,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:55:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 07:55:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:24,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:24,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:24,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:24,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:55:24,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:24,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:24,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:24,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:24,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:24,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:55:24,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:24,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 07:55:24,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:24,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:24,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:24,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:24,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:55:24,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:55:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:24,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:24,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 07:55:24,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-29 07:55:24,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:24,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:55:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 99 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:55:24,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326652404] [2020-10-29 07:55:24,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:24,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:24,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744383706] [2020-10-29 07:55:24,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:55:24,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:24,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:55:24,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:55:24,961 INFO L87 Difference]: Start difference. First operand 2591 states and 3233 transitions. Second operand 8 states. [2020-10-29 07:55:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:34,828 INFO L93 Difference]: Finished difference Result 5567 states and 7151 transitions. [2020-10-29 07:55:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:55:34,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 275 [2020-10-29 07:55:34,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:34,853 INFO L225 Difference]: With dead ends: 5567 [2020-10-29 07:55:34,853 INFO L226 Difference]: Without dead ends: 3286 [2020-10-29 07:55:34,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:55:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2020-10-29 07:55:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 3244. [2020-10-29 07:55:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3244 states. [2020-10-29 07:55:34,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 3899 transitions. [2020-10-29 07:55:34,994 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 3899 transitions. Word has length 275 [2020-10-29 07:55:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:34,995 INFO L481 AbstractCegarLoop]: Abstraction has 3244 states and 3899 transitions. [2020-10-29 07:55:34,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:55:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 3899 transitions. [2020-10-29 07:55:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-29 07:55:35,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:35,003 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:55:35,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:55:35,003 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:35,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:35,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1480440661, now seen corresponding path program 1 times [2020-10-29 07:55:35,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:35,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372331344] [2020-10-29 07:55:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:35,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:40,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:40,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-29 07:55:40,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:55:40,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 07:55:40,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:40,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:55:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:40,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:40,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:40,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:40,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:40,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:40,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:55:40,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:40,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:55:40,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:40,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:55:40,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-29 07:55:41,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:41,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:55:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:41,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:55:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:41,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:41,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:41,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:55:41,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:41,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:55:41,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:41,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:41,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:41,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 07:55:41,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:41,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 98 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:55:42,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372331344] [2020-10-29 07:55:42,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:42,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:42,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903746744] [2020-10-29 07:55:42,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:42,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:42,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:42,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:42,185 INFO L87 Difference]: Start difference. First operand 3244 states and 3899 transitions. Second operand 7 states. [2020-10-29 07:55:52,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:52,859 INFO L93 Difference]: Finished difference Result 7218 states and 8697 transitions. [2020-10-29 07:55:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:55:52,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-29 07:55:52,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:52,885 INFO L225 Difference]: With dead ends: 7218 [2020-10-29 07:55:52,886 INFO L226 Difference]: Without dead ends: 4287 [2020-10-29 07:55:52,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:55:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4287 states. [2020-10-29 07:55:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4287 to 4202. [2020-10-29 07:55:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4202 states. [2020-10-29 07:55:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 4935 transitions. [2020-10-29 07:55:53,018 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 4935 transitions. Word has length 342 [2020-10-29 07:55:53,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:53,019 INFO L481 AbstractCegarLoop]: Abstraction has 4202 states and 4935 transitions. [2020-10-29 07:55:53,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:53,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 4935 transitions. [2020-10-29 07:55:53,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-29 07:55:53,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:53,028 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:55:53,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:55:53,029 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:53,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:53,029 INFO L82 PathProgramCache]: Analyzing trace with hash 42374380, now seen corresponding path program 1 times [2020-10-29 07:55:53,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:53,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120236303] [2020-10-29 07:55:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:55,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:55,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-29 07:55:55,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:55,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2292 [2020-10-29 07:55:55,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:55,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:55:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:55:55,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:55,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:55,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:55,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:55,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:55,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:55:55,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:55,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:55,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:55,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:55,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:56,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:56,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:55:56,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:56,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-29 07:55:56,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:56,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:55:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:55:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:56,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:56,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:56,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:55:56,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:56,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 07:55:56,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:56,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:55:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:55:57,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120236303] [2020-10-29 07:55:57,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:57,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:55:57,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412042632] [2020-10-29 07:55:57,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:55:57,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:57,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:55:57,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:55:57,066 INFO L87 Difference]: Start difference. First operand 4202 states and 4935 transitions. Second operand 8 states. [2020-10-29 07:56:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:11,203 INFO L93 Difference]: Finished difference Result 11295 states and 14114 transitions. [2020-10-29 07:56:11,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:56:11,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 416 [2020-10-29 07:56:11,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:11,240 INFO L225 Difference]: With dead ends: 11295 [2020-10-29 07:56:11,240 INFO L226 Difference]: Without dead ends: 7406 [2020-10-29 07:56:11,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:56:11,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7406 states. [2020-10-29 07:56:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7406 to 7382. [2020-10-29 07:56:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7382 states. [2020-10-29 07:56:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 8960 transitions. [2020-10-29 07:56:11,442 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 8960 transitions. Word has length 416 [2020-10-29 07:56:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:11,443 INFO L481 AbstractCegarLoop]: Abstraction has 7382 states and 8960 transitions. [2020-10-29 07:56:11,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:56:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 8960 transitions. [2020-10-29 07:56:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-29 07:56:11,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:11,457 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:56:11,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:56:11,458 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:11,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:11,458 INFO L82 PathProgramCache]: Analyzing trace with hash -844145643, now seen corresponding path program 1 times [2020-10-29 07:56:11,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:11,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391735562] [2020-10-29 07:56:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:11,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:16,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:16,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 537 [2020-10-29 07:56:16,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:56:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-29 07:56:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:16,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:56:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:56:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:16,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:16,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:16,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:56:16,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:16,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:16,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:16,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:17,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:17,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:56:17,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-29 07:56:17,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:17,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:56:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:17,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:56:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:17,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:17,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:56:17,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 07:56:17,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:17,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:17,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:17,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:17,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:56:17,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:18,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:56:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:18,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:18,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:56:18,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:18,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:56:18,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:18,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 07:56:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:18,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 259 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:56:18,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391735562] [2020-10-29 07:56:18,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:18,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:56:18,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802059627] [2020-10-29 07:56:18,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:56:18,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:18,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:56:18,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:56:18,466 INFO L87 Difference]: Start difference. First operand 7382 states and 8960 transitions. Second operand 7 states. [2020-10-29 07:56:31,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:31,486 INFO L93 Difference]: Finished difference Result 15782 states and 19266 transitions. [2020-10-29 07:56:31,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:56:31,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 521 [2020-10-29 07:56:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:31,548 INFO L225 Difference]: With dead ends: 15782 [2020-10-29 07:56:31,549 INFO L226 Difference]: Without dead ends: 8713 [2020-10-29 07:56:31,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:56:31,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8713 states. [2020-10-29 07:56:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8713 to 8669. [2020-10-29 07:56:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8669 states. [2020-10-29 07:56:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8669 states to 8669 states and 10373 transitions. [2020-10-29 07:56:31,840 INFO L78 Accepts]: Start accepts. Automaton has 8669 states and 10373 transitions. Word has length 521 [2020-10-29 07:56:31,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:31,841 INFO L481 AbstractCegarLoop]: Abstraction has 8669 states and 10373 transitions. [2020-10-29 07:56:31,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:56:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 8669 states and 10373 transitions. [2020-10-29 07:56:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-29 07:56:31,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:31,861 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:56:31,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:56:31,862 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:31,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:31,863 INFO L82 PathProgramCache]: Analyzing trace with hash 624691213, now seen corresponding path program 1 times [2020-10-29 07:56:31,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:31,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588239284] [2020-10-29 07:56:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:32,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:34,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:34,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-29 07:56:34,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:56:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2898 [2020-10-29 07:56:34,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:34,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:56:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:56:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 07:56:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:35,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:35,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:35,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:35,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:56:35,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:35,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:35,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:35,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:35,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:56:35,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:35,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:56:35,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:35,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:35,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:56:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:35,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:35,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:56:35,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:56:35,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:35,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:56:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:35,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:56:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:35,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:35,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:56:35,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:35,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 07:56:35,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:35,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:56:35,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 252 proven. 50 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:56:35,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588239284] [2020-10-29 07:56:35,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:35,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:56:35,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867554958] [2020-10-29 07:56:35,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:56:35,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:35,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:56:35,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:56:35,963 INFO L87 Difference]: Start difference. First operand 8669 states and 10373 transitions. Second operand 6 states. [2020-10-29 07:56:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:46,279 INFO L93 Difference]: Finished difference Result 17281 states and 22951 transitions. [2020-10-29 07:56:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:56:46,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 533 [2020-10-29 07:56:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:46,339 INFO L225 Difference]: With dead ends: 17281 [2020-10-29 07:56:46,339 INFO L226 Difference]: Without dead ends: 12035 [2020-10-29 07:56:46,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:56:46,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12035 states. [2020-10-29 07:56:46,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12035 to 11925. [2020-10-29 07:56:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11925 states. [2020-10-29 07:56:46,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11925 states to 11925 states and 14891 transitions. [2020-10-29 07:56:46,707 INFO L78 Accepts]: Start accepts. Automaton has 11925 states and 14891 transitions. Word has length 533 [2020-10-29 07:56:46,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:46,709 INFO L481 AbstractCegarLoop]: Abstraction has 11925 states and 14891 transitions. [2020-10-29 07:56:46,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:56:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 11925 states and 14891 transitions. [2020-10-29 07:56:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2020-10-29 07:56:46,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:46,729 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:56:46,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:56:46,730 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:46,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:46,731 INFO L82 PathProgramCache]: Analyzing trace with hash -391334943, now seen corresponding path program 1 times [2020-10-29 07:56:46,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:46,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064241285] [2020-10-29 07:56:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:46,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:49,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:49,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:51,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:51,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 623 [2020-10-29 07:56:51,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:56:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 07:56:51,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:51,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:56:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:56:51,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:52,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:52,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:52,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:52,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:52,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:56:52,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:52,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:52,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:52,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:52,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:52,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:56:52,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:52,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:56:52,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:52,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:52,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:52,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:56:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:52,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:56:52,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:56:52,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:52,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:56:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:52,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:56:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:52,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:52,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:56:52,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:52,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 07:56:52,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:52,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:56:52,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:52,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-29 07:56:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:52,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:52,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:52,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:56:52,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:52,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:56:52,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:52,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 07:56:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 347 proven. 71 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-29 07:56:53,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064241285] [2020-10-29 07:56:53,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:53,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:56:53,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645641189] [2020-10-29 07:56:53,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:56:53,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:53,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:56:53,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:56:53,025 INFO L87 Difference]: Start difference. First operand 11925 states and 14891 transitions. Second operand 7 states. [2020-10-29 07:57:08,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:08,293 INFO L93 Difference]: Finished difference Result 25777 states and 32473 transitions. [2020-10-29 07:57:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:57:08,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 605 [2020-10-29 07:57:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:08,347 INFO L225 Difference]: With dead ends: 25777 [2020-10-29 07:57:08,347 INFO L226 Difference]: Without dead ends: 14165 [2020-10-29 07:57:08,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:57:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14165 states. [2020-10-29 07:57:08,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14165 to 13203. [2020-10-29 07:57:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13203 states. [2020-10-29 07:57:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13203 states to 13203 states and 15899 transitions. [2020-10-29 07:57:08,693 INFO L78 Accepts]: Start accepts. Automaton has 13203 states and 15899 transitions. Word has length 605 [2020-10-29 07:57:08,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:08,694 INFO L481 AbstractCegarLoop]: Abstraction has 13203 states and 15899 transitions. [2020-10-29 07:57:08,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:08,694 INFO L276 IsEmpty]: Start isEmpty. Operand 13203 states and 15899 transitions. [2020-10-29 07:57:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2020-10-29 07:57:08,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:08,708 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:57:08,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:57:08,708 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:08,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1074907211, now seen corresponding path program 1 times [2020-10-29 07:57:08,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:08,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680018281] [2020-10-29 07:57:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:11,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:13,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:13,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 629 [2020-10-29 07:57:13,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:57:13,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 07:57:13,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:13,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:13,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:13,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 489 [2020-10-29 07:57:13,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:57:13,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:57:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:14,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:57:14,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:57:14,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:14,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:57:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:14,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:57:14,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:57:14,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:14,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:57:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:57:14,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:14,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:57:14,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:14,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:14,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:57:14,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-10-29 07:57:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:14,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:57:14,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:14,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:57:14,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:57:14,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 433 proven. 2 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-29 07:57:14,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680018281] [2020-10-29 07:57:14,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:14,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:14,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943874261] [2020-10-29 07:57:14,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:14,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:14,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:14,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:14,862 INFO L87 Difference]: Start difference. First operand 13203 states and 15899 transitions. Second operand 7 states. [2020-10-29 07:57:29,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:29,275 INFO L93 Difference]: Finished difference Result 28019 states and 34582 transitions. [2020-10-29 07:57:29,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:57:29,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 611 [2020-10-29 07:57:29,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:29,339 INFO L225 Difference]: With dead ends: 28019 [2020-10-29 07:57:29,339 INFO L226 Difference]: Without dead ends: 16316 [2020-10-29 07:57:29,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:57:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16316 states. [2020-10-29 07:57:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16316 to 16282. [2020-10-29 07:57:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16282 states. [2020-10-29 07:57:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16282 states to 16282 states and 18581 transitions. [2020-10-29 07:57:29,717 INFO L78 Accepts]: Start accepts. Automaton has 16282 states and 18581 transitions. Word has length 611 [2020-10-29 07:57:29,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:29,718 INFO L481 AbstractCegarLoop]: Abstraction has 16282 states and 18581 transitions. [2020-10-29 07:57:29,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 16282 states and 18581 transitions. [2020-10-29 07:57:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-29 07:57:29,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:29,742 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:57:29,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:57:29,742 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:29,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1192957253, now seen corresponding path program 1 times [2020-10-29 07:57:29,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:29,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219716949] [2020-10-29 07:57:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:30,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:32,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:32,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 693 [2020-10-29 07:57:32,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:57:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2848 [2020-10-29 07:57:32,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:32,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:57:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 07:57:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:32,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:32,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:32,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:32,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:57:32,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:32,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:32,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:32,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:32,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:32,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:32,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:32,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:33,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:33,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:57:33,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 07:57:33,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:33,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:33,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:57:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:33,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:33,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:33,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:57:33,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 07:57:33,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:33,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:57:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:33,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:57:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:33,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:33,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 07:57:33,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-29 07:57:33,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:33,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:33,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:33,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:33,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 07:57:33,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 480 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:57:34,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219716949] [2020-10-29 07:57:34,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:34,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:34,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757470747] [2020-10-29 07:57:34,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:34,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:34,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:34,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:34,049 INFO L87 Difference]: Start difference. First operand 16282 states and 18581 transitions. Second operand 7 states. [2020-10-29 07:57:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:50,605 INFO L93 Difference]: Finished difference Result 34269 states and 40077 transitions. [2020-10-29 07:57:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:57:50,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 677 [2020-10-29 07:57:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:50,665 INFO L225 Difference]: With dead ends: 34269 [2020-10-29 07:57:50,665 INFO L226 Difference]: Without dead ends: 19847 [2020-10-29 07:57:50,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:57:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19847 states. [2020-10-29 07:57:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19847 to 19158. [2020-10-29 07:57:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19158 states. [2020-10-29 07:57:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19158 states to 19158 states and 21908 transitions. [2020-10-29 07:57:51,090 INFO L78 Accepts]: Start accepts. Automaton has 19158 states and 21908 transitions. Word has length 677 [2020-10-29 07:57:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:51,091 INFO L481 AbstractCegarLoop]: Abstraction has 19158 states and 21908 transitions. [2020-10-29 07:57:51,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:51,092 INFO L276 IsEmpty]: Start isEmpty. Operand 19158 states and 21908 transitions. [2020-10-29 07:57:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2020-10-29 07:57:51,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:51,126 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:57:51,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:57:51,126 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:51,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:51,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1883137379, now seen corresponding path program 1 times [2020-10-29 07:57:51,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:51,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308310033] [2020-10-29 07:57:51,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:51,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:56,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:56,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 741 [2020-10-29 07:57:56,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:57:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-29 07:57:56,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:56,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 501 [2020-10-29 07:57:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:57:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:56,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:56,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:56,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:56,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:56,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:57:56,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:56,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:56,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:56,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:56,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:56,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:56,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:57:56,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:56,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:57:56,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:56,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:56,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:56,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:57:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:56,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:56,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:57:56,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 07:57:56,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:56,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:56,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:57:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:57,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:57,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:57:57,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:57,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:57:57,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:57,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:57,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:57,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:57,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:57:57,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:57,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-29 07:57:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:57,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:57,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 07:57:57,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 07:57:57,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:57,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 07:57:57,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 575 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-29 07:57:57,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308310033] [2020-10-29 07:57:57,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:57,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:57,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600634922] [2020-10-29 07:57:57,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:57,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:57,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:57,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:57,678 INFO L87 Difference]: Start difference. First operand 19158 states and 21908 transitions. Second operand 7 states.