/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/Problem14_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:37:46,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:37:46,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:37:46,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:37:46,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:37:46,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:37:46,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:37:46,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:37:46,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:37:46,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:37:46,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:37:46,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:37:46,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:37:46,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:37:46,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:37:46,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:37:46,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:37:46,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:37:46,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:37:46,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:37:46,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:37:46,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:37:46,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:37:46,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:37:46,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:37:46,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:37:46,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:37:46,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:37:46,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:37:46,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:37:46,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:37:46,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:37:46,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:37:46,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:37:46,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:37:46,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:37:46,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:37:46,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:37:46,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:37:46,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:37:46,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:37:46,755 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 07:37:46,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:37:46,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:37:46,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:37:46,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:37:46,785 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:37:46,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:37:46,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:37:46,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:37:46,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:37:46,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:37:46,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:37:46,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:37:46,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:37:46,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:37:46,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:37:46,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:37:46,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:37:46,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:37:46,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:37:46,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:37:46,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:37:46,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:37:46,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:37:46,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:37:46,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:37:46,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:37:46,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:37:46,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:37:46,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:37:46,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:37:47,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:37:47,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:37:47,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:37:47,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:37:47,213 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:37:47,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label53.c [2020-10-29 07:37:47,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cf20af4f/dc42b2a98f3f4be58c677084add9651e/FLAG635bb25bb [2020-10-29 07:37:48,094 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:37:48,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label53.c [2020-10-29 07:37:48,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cf20af4f/dc42b2a98f3f4be58c677084add9651e/FLAG635bb25bb [2020-10-29 07:37:48,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cf20af4f/dc42b2a98f3f4be58c677084add9651e [2020-10-29 07:37:48,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:37:48,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:37:48,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:37:48,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:37:48,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:37:48,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:37:48" (1/1) ... [2020-10-29 07:37:48,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ce5632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:48, skipping insertion in model container [2020-10-29 07:37:48,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:37:48" (1/1) ... [2020-10-29 07:37:48,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:37:48,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:37:48,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:37:48,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:37:49,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:37:49,210 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:37:49,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:49 WrapperNode [2020-10-29 07:37:49,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:37:49,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:37:49,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:37:49,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:37:49,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:49" (1/1) ... [2020-10-29 07:37:49,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:49" (1/1) ... [2020-10-29 07:37:49,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:49" (1/1) ... [2020-10-29 07:37:49,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:49" (1/1) ... [2020-10-29 07:37:49,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:49" (1/1) ... [2020-10-29 07:37:49,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:49" (1/1) ... [2020-10-29 07:37:49,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:49" (1/1) ... [2020-10-29 07:37:49,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:37:49,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:37:49,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:37:49,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:37:49,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:49" (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 07:37:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:37:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:37:49,475 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:37:49,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:37:49,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:37:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:37:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:37:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:37:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:37:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:37:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:37:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:37:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:37:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:37:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:37:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:37:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:37:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:37:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:37:50,993 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:37:50,993 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:37:50,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:37:50 BoogieIcfgContainer [2020-10-29 07:37:50,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:37:50,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:37:50,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:37:51,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:37:51,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:37:48" (1/3) ... [2020-10-29 07:37:51,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af7cae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:37:51, skipping insertion in model container [2020-10-29 07:37:51,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:37:49" (2/3) ... [2020-10-29 07:37:51,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af7cae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:37:51, skipping insertion in model container [2020-10-29 07:37:51,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:37:50" (3/3) ... [2020-10-29 07:37:51,007 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label53.c [2020-10-29 07:37:51,020 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:37:51,027 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:37:51,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:37:51,076 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:37:51,076 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:37:51,076 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:37:51,077 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:37:51,077 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:37:51,077 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:37:51,077 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:37:51,077 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:37:51,103 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-29 07:37:51,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 07:37:51,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:51,115 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] [2020-10-29 07:37:51,115 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:51,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:51,123 INFO L82 PathProgramCache]: Analyzing trace with hash -572014888, now seen corresponding path program 1 times [2020-10-29 07:37:51,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:51,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780184632] [2020-10-29 07:37:51,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:51,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:51,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 07:37:51,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:51,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-29 07:37:51,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:51,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:37:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:37:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 07:37:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:37:52,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:52,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:52,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:52,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:52,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:37:52,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:52,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:37:52,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:37:52,210 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 07:37:52,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780184632] [2020-10-29 07:37:52,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:37:52,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:37:52,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353339695] [2020-10-29 07:37:52,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:37:52,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:52,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:37:52,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:37:52,243 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-29 07:37:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:54,467 INFO L93 Difference]: Finished difference Result 703 states and 1247 transitions. [2020-10-29 07:37:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:37:54,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-29 07:37:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:54,512 INFO L225 Difference]: With dead ends: 703 [2020-10-29 07:37:54,513 INFO L226 Difference]: Without dead ends: 381 [2020-10-29 07:37:54,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:37:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-29 07:37:54,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-29 07:37:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-29 07:37:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 605 transitions. [2020-10-29 07:37:54,666 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 605 transitions. Word has length 56 [2020-10-29 07:37:54,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:54,667 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 605 transitions. [2020-10-29 07:37:54,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:37:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 605 transitions. [2020-10-29 07:37:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 07:37:54,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:54,687 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, 1, 1, 1, 1, 1, 1, 1, 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 07:37:54,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:37:54,687 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:54,689 INFO L82 PathProgramCache]: Analyzing trace with hash -24200508, now seen corresponding path program 1 times [2020-10-29 07:37:54,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:54,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576484783] [2020-10-29 07:37:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:54,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:56,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:56,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 07:37:56,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:37:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1329 [2020-10-29 07:37:56,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:56,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:37:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 07:37:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:37:56,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:56,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:56,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:56,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:56,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:37:56,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:56,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:37:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:56,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:56,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:56,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:37:56,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:37:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:56,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:37:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:37:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:37:56,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576484783] [2020-10-29 07:37:56,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:56,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:37:56,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945929064] [2020-10-29 07:37:56,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:37:56,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:56,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:37:56,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:37:56,409 INFO L87 Difference]: Start difference. First operand 375 states and 605 transitions. Second operand 5 states. [2020-10-29 07:37:58,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:58,828 INFO L93 Difference]: Finished difference Result 934 states and 1520 transitions. [2020-10-29 07:37:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:37:58,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-29 07:37:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:58,834 INFO L225 Difference]: With dead ends: 934 [2020-10-29 07:37:58,835 INFO L226 Difference]: Without dead ends: 565 [2020-10-29 07:37:58,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 07:37:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-29 07:37:58,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-29 07:37:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-29 07:37:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 802 transitions. [2020-10-29 07:37:58,870 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 802 transitions. Word has length 125 [2020-10-29 07:37:58,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:58,871 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 802 transitions. [2020-10-29 07:37:58,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:37:58,872 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 802 transitions. [2020-10-29 07:37:58,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 07:37:58,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:58,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:58,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:37:58,875 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:58,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1151425736, now seen corresponding path program 1 times [2020-10-29 07:37:58,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:58,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956238676] [2020-10-29 07:37:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:58,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:59,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:59,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:00,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:00,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 07:38:00,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:38:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-10-29 07:38:00,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:00,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:38:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:38:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:38:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:00,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:00,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:00,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:00,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:38:00,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:00,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:38:00,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:00,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:00,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:00,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:38:00,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 07:38:00,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:00,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:38:00,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:38:00,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956238676] [2020-10-29 07:38:00,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:38:00,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:38:00,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548968742] [2020-10-29 07:38:00,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:38:00,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:00,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:38:00,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:38:00,667 INFO L87 Difference]: Start difference. First operand 561 states and 802 transitions. Second operand 7 states. [2020-10-29 07:38:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:03,345 INFO L93 Difference]: Finished difference Result 1320 states and 1947 transitions. [2020-10-29 07:38:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:38:03,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-29 07:38:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:03,352 INFO L225 Difference]: With dead ends: 1320 [2020-10-29 07:38:03,352 INFO L226 Difference]: Without dead ends: 765 [2020-10-29 07:38:03,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:38:03,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2020-10-29 07:38:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 751. [2020-10-29 07:38:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-29 07:38:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1058 transitions. [2020-10-29 07:38:03,392 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1058 transitions. Word has length 130 [2020-10-29 07:38:03,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:03,393 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 1058 transitions. [2020-10-29 07:38:03,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:38:03,393 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1058 transitions. [2020-10-29 07:38:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 07:38:03,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:03,398 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, 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] [2020-10-29 07:38:03,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:38:03,398 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:03,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:03,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1801120452, now seen corresponding path program 1 times [2020-10-29 07:38:03,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:03,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643174786] [2020-10-29 07:38:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:03,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:03,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:03,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:08,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:08,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 07:38:08,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:38:08,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 07:38:08,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:08,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:38:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:38:08,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:38:08,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:08,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:08,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:08,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:08,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:38:08,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:08,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:08,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:08,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:08,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:08,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:08,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:08,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:08,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:38:08,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:38:08,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:08,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:08,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:38:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:38:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 07:38:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:08,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:08,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:08,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:38:08,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:38:08,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:08,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:38:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:38:09,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643174786] [2020-10-29 07:38:09,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:09,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:38:09,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331104368] [2020-10-29 07:38:09,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:38:09,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:09,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:38:09,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:38:09,062 INFO L87 Difference]: Start difference. First operand 751 states and 1058 transitions. Second operand 7 states. [2020-10-29 07:38:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:11,775 INFO L93 Difference]: Finished difference Result 1696 states and 2336 transitions. [2020-10-29 07:38:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:38:11,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-29 07:38:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:11,783 INFO L225 Difference]: With dead ends: 1696 [2020-10-29 07:38:11,784 INFO L226 Difference]: Without dead ends: 763 [2020-10-29 07:38:11,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:38:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-10-29 07:38:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 751. [2020-10-29 07:38:11,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-29 07:38:11,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 863 transitions. [2020-10-29 07:38:11,825 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 863 transitions. Word has length 208 [2020-10-29 07:38:11,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:11,827 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 863 transitions. [2020-10-29 07:38:11,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:38:11,827 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 863 transitions. [2020-10-29 07:38:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 07:38:11,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:11,832 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, 2, 2, 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] [2020-10-29 07:38:11,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:38:11,833 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:11,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:11,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1858559928, now seen corresponding path program 1 times [2020-10-29 07:38:11,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:11,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512938871] [2020-10-29 07:38:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:11,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:12,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-29 07:38:16,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:38:16,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 07:38:16,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:38:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:38:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-29 07:38:16,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:17,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:17,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:17,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:17,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:17,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:17,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:38:17,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:17,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:38:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:17,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:17,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:17,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:17,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:17,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-29 07:38:17,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:17,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:38:17,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:17,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-29 07:38:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:17,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:17,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:17,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:38:17,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:17,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:38:17,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:17,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:38:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:38:17,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512938871] [2020-10-29 07:38:17,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:17,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:38:17,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927825543] [2020-10-29 07:38:17,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:38:17,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:17,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:38:17,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:38:17,764 INFO L87 Difference]: Start difference. First operand 751 states and 863 transitions. Second operand 7 states. [2020-10-29 07:38:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:19,545 INFO L93 Difference]: Finished difference Result 1696 states and 1946 transitions. [2020-10-29 07:38:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:38:19,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-29 07:38:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:19,552 INFO L225 Difference]: With dead ends: 1696 [2020-10-29 07:38:19,552 INFO L226 Difference]: Without dead ends: 951 [2020-10-29 07:38:19,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:38:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2020-10-29 07:38:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 935. [2020-10-29 07:38:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-29 07:38:19,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1053 transitions. [2020-10-29 07:38:19,592 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1053 transitions. Word has length 309 [2020-10-29 07:38:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:19,593 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1053 transitions. [2020-10-29 07:38:19,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:38:19,593 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1053 transitions. [2020-10-29 07:38:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-29 07:38:19,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:19,602 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:19,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:38:19,603 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:19,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:19,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1861680596, now seen corresponding path program 1 times [2020-10-29 07:38:19,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:19,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526062267] [2020-10-29 07:38:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:20,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:24,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:24,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-29 07:38:24,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:38:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 07:38:24,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:24,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 07:38:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:38:24,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:24,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:24,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:24,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:24,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:24,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:38:24,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:24,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:24,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:24,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:24,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:24,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:24,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:24,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:25,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 07:38:25,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:38:25,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 07:38:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:25,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-29 07:38:25,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:38:25,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-29 07:38:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:38:25,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:38:25,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:38:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 254 proven. 73 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-29 07:38:25,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526062267] [2020-10-29 07:38:25,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:25,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:38:25,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820994694] [2020-10-29 07:38:25,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:38:25,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:25,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:38:25,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:38:25,881 INFO L87 Difference]: Start difference. First operand 935 states and 1053 transitions. Second operand 7 states. [2020-10-29 07:38:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:27,841 INFO L93 Difference]: Finished difference Result 2262 states and 2642 transitions. [2020-10-29 07:38:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:38:27,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-29 07:38:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:27,853 INFO L225 Difference]: With dead ends: 2262 [2020-10-29 07:38:27,853 INFO L226 Difference]: Without dead ends: 1515 [2020-10-29 07:38:27,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:38:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-10-29 07:38:27,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1311. [2020-10-29 07:38:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-29 07:38:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1474 transitions. [2020-10-29 07:38:27,920 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1474 transitions. Word has length 418 [2020-10-29 07:38:27,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:27,921 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1474 transitions. [2020-10-29 07:38:27,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:38:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1474 transitions. [2020-10-29 07:38:27,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-29 07:38:27,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:27,932 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:27,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:38:27,932 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:27,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:27,933 INFO L82 PathProgramCache]: Analyzing trace with hash 848723036, now seen corresponding path program 1 times [2020-10-29 07:38:27,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:27,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707716226] [2020-10-29 07:38:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:28,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:28,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:33,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:33,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 458 [2020-10-29 07:38:33,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:38:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-29 07:38:33,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:33,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-29 07:38:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:38:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:38:33,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:33,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:33,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:33,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:38:33,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:33,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:33,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:33,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:33,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:33,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:38:33,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 07:38:33,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:33,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 07:38:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:33,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-29 07:38:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:33,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:33,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:33,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:33,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 07:38:33,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:33,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:38:33,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:33,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-29 07:38:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:33,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:33,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:33,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:38:33,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:38:33,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:33,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:38:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 278 proven. 73 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-29 07:38:34,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707716226] [2020-10-29 07:38:34,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:34,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:38:34,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743693678] [2020-10-29 07:38:34,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:38:34,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:34,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:38:34,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:38:34,142 INFO L87 Difference]: Start difference. First operand 1311 states and 1474 transitions. Second operand 7 states. [2020-10-29 07:38:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:36,265 INFO L93 Difference]: Finished difference Result 3746 states and 4282 transitions. [2020-10-29 07:38:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:38:36,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2020-10-29 07:38:36,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:36,280 INFO L225 Difference]: With dead ends: 3746 [2020-10-29 07:38:36,280 INFO L226 Difference]: Without dead ends: 2441 [2020-10-29 07:38:36,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:38:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2020-10-29 07:38:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 2433. [2020-10-29 07:38:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2433 states. [2020-10-29 07:38:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 2711 transitions. [2020-10-29 07:38:36,364 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 2711 transitions. Word has length 442 [2020-10-29 07:38:36,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:36,365 INFO L481 AbstractCegarLoop]: Abstraction has 2433 states and 2711 transitions. [2020-10-29 07:38:36,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:38:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 2711 transitions. [2020-10-29 07:38:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-29 07:38:36,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:36,381 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, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:38:36,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:38:36,381 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:36,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:36,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1989709740, now seen corresponding path program 1 times [2020-10-29 07:38:36,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:36,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96772885] [2020-10-29 07:38:36,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:36,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:40,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-29 07:38:41,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:38:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:38:41,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 07:38:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 07:38:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:41,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:38:41,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:41,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:41,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:41,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:41,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:38:41,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:41,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:41,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:38:41,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 07:38:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:38:41,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:41,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 07:38:41,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 07:38:41,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:42,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-29 07:38:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:42,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:42,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:42,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 07:38:42,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:42,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:38:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:42,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-29 07:38:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:42,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:42,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:38:42,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:42,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:38:42,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:42,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:38:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:42,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:38:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 306 proven. 229 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-29 07:38:42,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96772885] [2020-10-29 07:38:42,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:42,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:38:42,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628611439] [2020-10-29 07:38:42,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:38:42,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:42,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:38:42,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:38:42,576 INFO L87 Difference]: Start difference. First operand 2433 states and 2711 transitions. Second operand 8 states. [2020-10-29 07:38:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:45,068 INFO L93 Difference]: Finished difference Result 6166 states and 7158 transitions. [2020-10-29 07:38:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:38:45,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 577 [2020-10-29 07:38:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:45,091 INFO L225 Difference]: With dead ends: 6166 [2020-10-29 07:38:45,092 INFO L226 Difference]: Without dead ends: 4105 [2020-10-29 07:38:45,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:38:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2020-10-29 07:38:45,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 3917. [2020-10-29 07:38:45,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3917 states. [2020-10-29 07:38:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 4474 transitions. [2020-10-29 07:38:45,229 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 4474 transitions. Word has length 577 [2020-10-29 07:38:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:45,230 INFO L481 AbstractCegarLoop]: Abstraction has 3917 states and 4474 transitions. [2020-10-29 07:38:45,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:38:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 4474 transitions. [2020-10-29 07:38:45,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2020-10-29 07:38:45,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:45,254 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:38:45,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:38:45,254 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:45,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:45,255 INFO L82 PathProgramCache]: Analyzing trace with hash 578695572, now seen corresponding path program 1 times [2020-10-29 07:38:45,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:45,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84027107] [2020-10-29 07:38:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:50,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:50,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 643 [2020-10-29 07:38:50,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:38:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 07:38:50,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:50,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 322 [2020-10-29 07:38:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:38:50,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:50,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:50,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:50,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:38:50,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:50,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:50,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:50,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:38:50,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:38:50,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:50,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:50,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:50,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-29 07:38:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:50,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:50,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:38:50,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:50,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 07:38:50,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:50,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:50,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-29 07:38:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:51,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:51,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:51,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 07:38:51,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:51,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:38:51,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-10-29 07:38:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:51,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:51,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:38:51,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:38:51,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:51,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:38:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 509 proven. 79 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-10-29 07:38:51,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84027107] [2020-10-29 07:38:51,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:51,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:38:51,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112227992] [2020-10-29 07:38:51,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:38:51,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:51,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:38:51,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:38:51,713 INFO L87 Difference]: Start difference. First operand 3917 states and 4474 transitions. Second operand 7 states. [2020-10-29 07:38:53,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:53,855 INFO L93 Difference]: Finished difference Result 8755 states and 10209 transitions. [2020-10-29 07:38:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:38:53,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 625 [2020-10-29 07:38:53,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:53,887 INFO L225 Difference]: With dead ends: 8755 [2020-10-29 07:38:53,888 INFO L226 Difference]: Without dead ends: 5210 [2020-10-29 07:38:53,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:38:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5210 states. [2020-10-29 07:38:54,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5210 to 5019. [2020-10-29 07:38:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5019 states. [2020-10-29 07:38:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5019 states to 5019 states and 5859 transitions. [2020-10-29 07:38:54,051 INFO L78 Accepts]: Start accepts. Automaton has 5019 states and 5859 transitions. Word has length 625 [2020-10-29 07:38:54,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:54,052 INFO L481 AbstractCegarLoop]: Abstraction has 5019 states and 5859 transitions. [2020-10-29 07:38:54,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:38:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5019 states and 5859 transitions. [2020-10-29 07:38:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2020-10-29 07:38:54,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:54,064 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:38:54,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:38:54,065 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:54,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:54,066 INFO L82 PathProgramCache]: Analyzing trace with hash 432316728, now seen corresponding path program 1 times [2020-10-29 07:38:54,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:54,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144781571] [2020-10-29 07:38:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:54,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:54,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:54,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:54,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:55,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:59,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:59,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 721 [2020-10-29 07:38:59,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:38:59,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 07:38:59,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:59,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-29 07:38:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:38:59,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:59,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:59,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:59,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:59,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:59,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:59,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:38:59,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:59,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:38:59,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:59,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 07:38:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-29 07:38:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:59,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:59,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:38:59,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 07:38:59,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:59,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:38:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:59,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-29 07:38:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:59,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:59,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:59,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:38:59,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:38:59,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:59,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:38:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:59,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-10-29 07:38:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:59,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:59,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:59,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:59,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:38:59,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:59,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:59,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:59,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:38:59,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:59,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:00,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-29 07:39:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:00,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:00,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:39:00,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:39:00,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:00,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:39:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1227 backedges. 382 proven. 326 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2020-10-29 07:39:00,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144781571] [2020-10-29 07:39:00,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:39:00,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:39:00,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579005748] [2020-10-29 07:39:00,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:39:00,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:00,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:39:00,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:39:00,539 INFO L87 Difference]: Start difference. First operand 5019 states and 5859 transitions. Second operand 7 states. [2020-10-29 07:39:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:02,652 INFO L93 Difference]: Finished difference Result 10049 states and 11794 transitions. [2020-10-29 07:39:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:39:02,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 701 [2020-10-29 07:39:02,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:02,679 INFO L225 Difference]: With dead ends: 10049 [2020-10-29 07:39:02,679 INFO L226 Difference]: Without dead ends: 5212 [2020-10-29 07:39:02,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:39:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2020-10-29 07:39:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 5025. [2020-10-29 07:39:02,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5025 states. [2020-10-29 07:39:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 5825 transitions. [2020-10-29 07:39:02,866 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 5825 transitions. Word has length 701 [2020-10-29 07:39:02,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:02,867 INFO L481 AbstractCegarLoop]: Abstraction has 5025 states and 5825 transitions. [2020-10-29 07:39:02,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:39:02,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 5825 transitions. [2020-10-29 07:39:02,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-10-29 07:39:02,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:02,884 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:39:02,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:39:02,884 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:02,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1333469360, now seen corresponding path program 1 times [2020-10-29 07:39:02,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:02,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591066413] [2020-10-29 07:39:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:03,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:03,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:08,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:08,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 809 [2020-10-29 07:39:08,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:39:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 07:39:08,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:08,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:08,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:08,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:39:08,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:39:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:08,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:08,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:08,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:08,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:39:08,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:08,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:08,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:08,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:08,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:08,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:39:08,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:08,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:08,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:39:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:08,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:08,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:08,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:39:08,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:39:08,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:08,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:39:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:08,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:39:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:08,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:08,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:08,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:39:08,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:08,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 07:39:08,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:08,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:39:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:08,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-29 07:39:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:08,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:08,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:08,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:39:08,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:39:08,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:08,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:39:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-10-29 07:39:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:08,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:08,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:39:08,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:39:08,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:08,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:39:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:08,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-29 07:39:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:08,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:08,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:39:08,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:08,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:39:08,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:08,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:08,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:08,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:39:08,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:08,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 530 proven. 326 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2020-10-29 07:39:09,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591066413] [2020-10-29 07:39:09,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:39:09,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:39:09,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979983740] [2020-10-29 07:39:09,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:39:09,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:09,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:39:09,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:39:09,469 INFO L87 Difference]: Start difference. First operand 5025 states and 5825 transitions. Second operand 7 states. [2020-10-29 07:39:11,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:11,393 INFO L93 Difference]: Finished difference Result 10050 states and 11748 transitions. [2020-10-29 07:39:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:39:11,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 787 [2020-10-29 07:39:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:11,422 INFO L225 Difference]: With dead ends: 10050 [2020-10-29 07:39:11,423 INFO L226 Difference]: Without dead ends: 5397 [2020-10-29 07:39:11,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:39:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5397 states. [2020-10-29 07:39:11,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5397 to 5391. [2020-10-29 07:39:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5391 states. [2020-10-29 07:39:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5391 states to 5391 states and 6236 transitions. [2020-10-29 07:39:11,570 INFO L78 Accepts]: Start accepts. Automaton has 5391 states and 6236 transitions. Word has length 787 [2020-10-29 07:39:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:11,572 INFO L481 AbstractCegarLoop]: Abstraction has 5391 states and 6236 transitions. [2020-10-29 07:39:11,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:39:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5391 states and 6236 transitions. [2020-10-29 07:39:11,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-10-29 07:39:11,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:11,584 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:11,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:39:11,584 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:11,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:11,585 INFO L82 PathProgramCache]: Analyzing trace with hash -138586612, now seen corresponding path program 1 times [2020-10-29 07:39:11,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:11,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160241295] [2020-10-29 07:39:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:11,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:11,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:16,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:16,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 832 [2020-10-29 07:39:16,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:39:16,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 07:39:16,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:16,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:16,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:16,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:39:16,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:39:16,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:16,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:16,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:16,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:16,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:39:16,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:16,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:16,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:16,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:16,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:16,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:39:16,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:16,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:39:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:17,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:17,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:39:17,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:17,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:39:17,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:17,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:17,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:39:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:17,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:17,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:17,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:39:17,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:39:17,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:17,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:17,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:17,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:39:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:17,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:17,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:39:17,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:39:17,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:17,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:39:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:17,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:39:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:17,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:17,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:39:17,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 07:39:17,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:17,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:39:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:17,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-29 07:39:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:17,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:17,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:39:17,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:39:17,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:17,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:39:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 802 proven. 79 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2020-10-29 07:39:17,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160241295] [2020-10-29 07:39:17,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:39:17,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:39:17,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674435770] [2020-10-29 07:39:17,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:39:17,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:17,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:39:17,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:39:17,882 INFO L87 Difference]: Start difference. First operand 5391 states and 6236 transitions. Second operand 7 states. [2020-10-29 07:39:19,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:19,765 INFO L93 Difference]: Finished difference Result 10597 states and 12295 transitions. [2020-10-29 07:39:19,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:39:19,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 810 [2020-10-29 07:39:19,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:19,796 INFO L225 Difference]: With dead ends: 10597 [2020-10-29 07:39:19,796 INFO L226 Difference]: Without dead ends: 5578 [2020-10-29 07:39:19,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:39:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5578 states. [2020-10-29 07:39:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5578 to 5573. [2020-10-29 07:39:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5573 states. [2020-10-29 07:39:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5573 states to 5573 states and 6428 transitions. [2020-10-29 07:39:19,940 INFO L78 Accepts]: Start accepts. Automaton has 5573 states and 6428 transitions. Word has length 810 [2020-10-29 07:39:19,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:19,941 INFO L481 AbstractCegarLoop]: Abstraction has 5573 states and 6428 transitions. [2020-10-29 07:39:19,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:39:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5573 states and 6428 transitions. [2020-10-29 07:39:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2020-10-29 07:39:19,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:19,955 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:39:19,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:39:19,956 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:19,956 INFO L82 PathProgramCache]: Analyzing trace with hash -583267992, now seen corresponding path program 2 times [2020-10-29 07:39:19,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:19,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054617155] [2020-10-29 07:39:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:20,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:20,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:25,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:25,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 921 [2020-10-29 07:39:25,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:39:25,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 07:39:25,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:25,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 343 [2020-10-29 07:39:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:39:25,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:25,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:25,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:25,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:25,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:25,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:39:25,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:25,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:25,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:25,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:25,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:25,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:25,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:25,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:25,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:25,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:25,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:39:25,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:25,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:25,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:39:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:25,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:25,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:25,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:39:25,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:39:25,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:25,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:39:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:25,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:25,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:39:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:25,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 07:39:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-29 07:39:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:25,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:25,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:39:25,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:25,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 07:39:25,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:25,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:39:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-10-29 07:39:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:25,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:25,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:39:25,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:25,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:39:25,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:25,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:25,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:25,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:39:25,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:25,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-10-29 07:39:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:25,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:25,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:39:25,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:25,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 07:39:25,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:25,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:39:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:25,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:25,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2020-10-29 07:39:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:25,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:26,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:26,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:39:26,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:26,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:39:26,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:26,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:26,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:26,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:39:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:26,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 702 proven. 326 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2020-10-29 07:39:26,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054617155] [2020-10-29 07:39:26,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:39:26,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:39:26,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156357659] [2020-10-29 07:39:26,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:39:26,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:26,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:39:26,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:39:26,436 INFO L87 Difference]: Start difference. First operand 5573 states and 6428 transitions. Second operand 7 states. [2020-10-29 07:39:28,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:28,259 INFO L93 Difference]: Finished difference Result 11510 states and 13314 transitions. [2020-10-29 07:39:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:39:28,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 897 [2020-10-29 07:39:28,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:28,283 INFO L225 Difference]: With dead ends: 11510 [2020-10-29 07:39:28,283 INFO L226 Difference]: Without dead ends: 6309 [2020-10-29 07:39:28,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:39:28,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2020-10-29 07:39:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 6121. [2020-10-29 07:39:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6121 states. [2020-10-29 07:39:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6121 states to 6121 states and 7024 transitions. [2020-10-29 07:39:28,436 INFO L78 Accepts]: Start accepts. Automaton has 6121 states and 7024 transitions. Word has length 897 [2020-10-29 07:39:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:28,437 INFO L481 AbstractCegarLoop]: Abstraction has 6121 states and 7024 transitions. [2020-10-29 07:39:28,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:39:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6121 states and 7024 transitions. [2020-10-29 07:39:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2020-10-29 07:39:28,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:28,451 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:39:28,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:39:28,451 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:28,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:28,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1109122476, now seen corresponding path program 1 times [2020-10-29 07:39:28,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:28,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834831883] [2020-10-29 07:39:28,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:28,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:28,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:28,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:33,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:33,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 928 [2020-10-29 07:39:33,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:39:33,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-29 07:39:33,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:33,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-29 07:39:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:39:33,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:33,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:33,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:33,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:33,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:33,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:39:33,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:33,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:33,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:33,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:33,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:33,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:33,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:33,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:33,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:39:33,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:33,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:33,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:39:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:33,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:33,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:39:33,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:33,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:39:33,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:33,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:33,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:33,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:33,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:33,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:34,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:39:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:34,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:34,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:34,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:39:34,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:39:34,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:34,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:39:34,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:39:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:34,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:34,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:34,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:39:34,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:34,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 07:39:34,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:34,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:39:34,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-29 07:39:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:34,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:34,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:39:34,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:34,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:39:34,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:34,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:39:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:34,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:34,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-29 07:39:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:34,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:34,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:39:34,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:34,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 07:39:34,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:34,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:34,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:34,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:39:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-29 07:39:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:34,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:34,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:39:34,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:39:34,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:34,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:39:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:34,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 709 proven. 326 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2020-10-29 07:39:35,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834831883] [2020-10-29 07:39:35,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:39:35,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:39:35,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065625143] [2020-10-29 07:39:35,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:39:35,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:35,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:39:35,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:39:35,128 INFO L87 Difference]: Start difference. First operand 6121 states and 7024 transitions. Second operand 7 states. [2020-10-29 07:39:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:37,217 INFO L93 Difference]: Finished difference Result 12426 states and 14314 transitions. [2020-10-29 07:39:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:39:37,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 904 [2020-10-29 07:39:37,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:37,245 INFO L225 Difference]: With dead ends: 12426 [2020-10-29 07:39:37,245 INFO L226 Difference]: Without dead ends: 6495 [2020-10-29 07:39:37,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:39:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6495 states. [2020-10-29 07:39:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6495 to 6487. [2020-10-29 07:39:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6487 states. [2020-10-29 07:39:37,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6487 states to 6487 states and 7369 transitions. [2020-10-29 07:39:37,532 INFO L78 Accepts]: Start accepts. Automaton has 6487 states and 7369 transitions. Word has length 904 [2020-10-29 07:39:37,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:37,534 INFO L481 AbstractCegarLoop]: Abstraction has 6487 states and 7369 transitions. [2020-10-29 07:39:37,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:39:37,534 INFO L276 IsEmpty]: Start isEmpty. Operand 6487 states and 7369 transitions. [2020-10-29 07:39:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-10-29 07:39:37,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:37,553 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 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] [2020-10-29 07:39:37,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:39:37,553 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:37,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:37,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1420547652, now seen corresponding path program 1 times [2020-10-29 07:39:37,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:37,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343203551] [2020-10-29 07:39:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:41,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:41,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-29 07:39:41,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:39:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3640 [2020-10-29 07:39:41,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:41,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-29 07:39:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:39:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:41,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:41,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:41,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:41,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:41,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:39:41,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:41,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:41,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:41,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:41,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:41,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:39:41,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:41,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:41,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:41,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:39:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:41,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:41,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:41,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:39:41,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:41,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:39:41,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:41,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:41,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:39:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:41,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:41,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:39:41,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:41,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:39:41,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:41,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:41,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:41,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:41,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:41,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:39:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:41,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:41,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:41,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:39:41,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:39:41,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:41,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:41,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:41,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:41,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:39:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:41,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:41,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:41,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:39:41,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:41,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:39:41,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:41,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:41,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:41,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:39:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:41,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:41,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:41,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:39:41,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:41,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:39:41,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:41,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:39:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:42,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:42,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:39:42,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:42,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 07:39:42,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:42,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:42,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-29 07:39:42,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:39:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:42,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:42,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:39:42,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:42,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:39:42,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:42,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:39:42,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2994 backedges. 965 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-29 07:39:42,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343203551] [2020-10-29 07:39:42,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:39:42,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:39:42,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16261843] [2020-10-29 07:39:42,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:39:42,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:42,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:39:42,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:39:42,891 INFO L87 Difference]: Start difference. First operand 6487 states and 7369 transitions. Second operand 7 states. [2020-10-29 07:39:44,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:44,919 INFO L93 Difference]: Finished difference Result 12796 states and 14565 transitions. [2020-10-29 07:39:44,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:39:44,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 988 [2020-10-29 07:39:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:44,951 INFO L225 Difference]: With dead ends: 12796 [2020-10-29 07:39:44,952 INFO L226 Difference]: Without dead ends: 6499 [2020-10-29 07:39:44,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:39:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6499 states. [2020-10-29 07:39:45,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6499 to 6121. [2020-10-29 07:39:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6121 states. [2020-10-29 07:39:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6121 states to 6121 states and 6786 transitions. [2020-10-29 07:39:45,094 INFO L78 Accepts]: Start accepts. Automaton has 6121 states and 6786 transitions. Word has length 988 [2020-10-29 07:39:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:45,096 INFO L481 AbstractCegarLoop]: Abstraction has 6121 states and 6786 transitions. [2020-10-29 07:39:45,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:39:45,096 INFO L276 IsEmpty]: Start isEmpty. Operand 6121 states and 6786 transitions. [2020-10-29 07:39:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-10-29 07:39:45,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:45,111 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 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] [2020-10-29 07:39:45,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 07:39:45,111 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:45,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:45,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1344204940, now seen corresponding path program 1 times [2020-10-29 07:39:45,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:45,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859446266] [2020-10-29 07:39:45,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:45,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:47,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:47,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-29 07:39:47,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-10-29 07:39:47,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:47,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:39:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:39:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-29 07:39:47,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:47,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:47,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:47,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:47,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:47,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:39:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:47,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:47,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:47,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:47,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:39:47,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:47,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:39:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:47,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:47,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:47,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:39:47,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:39:47,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:47,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:47,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:39:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:47,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:47,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:39:47,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:47,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:39:47,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:47,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:47,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:47,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:47,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:39:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:47,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:47,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:39:47,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:47,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:39:47,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:47,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:47,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:47,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:39:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:47,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:47,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:39:47,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:39:47,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:47,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:47,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:39:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:47,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:47,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:47,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:39:47,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:47,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:39:47,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:47,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:39:47,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:47,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:39:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:48,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:48,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:48,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:39:48,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:48,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 07:39:48,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:48,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:39:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:39:48,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:39:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:48,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:48,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:39:48,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:39:48,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:48,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:39:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3009 backedges. 1637 proven. 6 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-29 07:39:48,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859446266] [2020-10-29 07:39:48,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:39:48,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:39:48,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032469353] [2020-10-29 07:39:48,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:39:48,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:48,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:39:48,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:39:48,946 INFO L87 Difference]: Start difference. First operand 6121 states and 6786 transitions. Second operand 10 states. [2020-10-29 07:39:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:52,384 INFO L93 Difference]: Finished difference Result 13912 states and 15614 transitions. [2020-10-29 07:39:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 07:39:52,387 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 991 [2020-10-29 07:39:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:52,414 INFO L225 Difference]: With dead ends: 13912 [2020-10-29 07:39:52,414 INFO L226 Difference]: Without dead ends: 7981 [2020-10-29 07:39:52,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-29 07:39:52,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7981 states. [2020-10-29 07:39:52,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7981 to 7781. [2020-10-29 07:39:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7781 states. [2020-10-29 07:39:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7781 states to 7781 states and 8774 transitions. [2020-10-29 07:39:52,592 INFO L78 Accepts]: Start accepts. Automaton has 7781 states and 8774 transitions. Word has length 991 [2020-10-29 07:39:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:52,594 INFO L481 AbstractCegarLoop]: Abstraction has 7781 states and 8774 transitions. [2020-10-29 07:39:52,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:39:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 7781 states and 8774 transitions. [2020-10-29 07:39:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1218 [2020-10-29 07:39:52,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:52,618 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 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, 2, 2, 2, 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] [2020-10-29 07:39:52,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 07:39:52,619 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:52,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:52,621 INFO L82 PathProgramCache]: Analyzing trace with hash -144868076, now seen corresponding path program 1 times [2020-10-29 07:39:52,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:52,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99832673] [2020-10-29 07:39:52,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:56,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:57,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:57,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1247 [2020-10-29 07:39:57,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:39:57,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-29 07:39:57,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:57,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:39:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:39:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-29 07:39:57,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:58,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:58,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:58,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:58,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:58,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:39:58,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:58,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:58,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:58,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:58,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:39:58,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:58,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:39:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:58,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:58,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:58,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:39:58,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:58,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:39:58,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:58,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:39:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:58,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:39:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:39:58,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:58,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:58,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:39:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:58,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:39:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:39:58,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:58,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:58,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:39:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:58,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:58,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:58,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:39:58,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:39:58,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:58,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:58,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:39:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:58,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:58,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:58,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:39:58,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:58,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:39:58,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:58,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:58,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:58,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:39:58,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:58,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:39:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:58,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:58,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:39:58,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 07:39:58,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:58,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:39:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:39:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:58,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:39:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:59,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:59,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:39:59,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 07:39:59,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:59,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:39:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:39:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:59,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:59,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:39:59,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:39:59,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:59,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:39:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:59,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1058 [2020-10-29 07:39:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:59,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:59,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:39:59,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:39:59,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:59,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:59,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:59,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-29 07:39:59,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:59,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4805 backedges. 2281 proven. 456 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2020-10-29 07:40:00,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99832673] [2020-10-29 07:40:00,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:00,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:40:00,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892544603] [2020-10-29 07:40:00,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:40:00,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:00,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:40:00,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:40:00,749 INFO L87 Difference]: Start difference. First operand 7781 states and 8774 transitions. Second operand 10 states. [2020-10-29 07:40:04,041 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-29 07:40:04,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:04,491 INFO L93 Difference]: Finished difference Result 15584 states and 17592 transitions. [2020-10-29 07:40:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 07:40:04,494 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1217 [2020-10-29 07:40:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:04,521 INFO L225 Difference]: With dead ends: 15584 [2020-10-29 07:40:04,521 INFO L226 Difference]: Without dead ends: 7993 [2020-10-29 07:40:04,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-29 07:40:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7993 states. [2020-10-29 07:40:04,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7993 to 7975. [2020-10-29 07:40:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7975 states. [2020-10-29 07:40:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7975 states to 7975 states and 8976 transitions. [2020-10-29 07:40:04,710 INFO L78 Accepts]: Start accepts. Automaton has 7975 states and 8976 transitions. Word has length 1217 [2020-10-29 07:40:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:04,712 INFO L481 AbstractCegarLoop]: Abstraction has 7975 states and 8976 transitions. [2020-10-29 07:40:04,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:40:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 7975 states and 8976 transitions. [2020-10-29 07:40:04,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1457 [2020-10-29 07:40:04,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:04,751 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2020-10-29 07:40:04,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 07:40:04,752 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:04,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:04,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1080211176, now seen corresponding path program 1 times [2020-10-29 07:40:04,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:04,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53547305] [2020-10-29 07:40:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:05,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:06,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:06,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1488 [2020-10-29 07:40:06,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:06,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1768 [2020-10-29 07:40:06,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:06,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:06,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:06,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-29 07:40:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 07:40:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:07,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:40:07,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:40:07,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:40:07,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:40:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:40:07,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:40:07,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:40:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:40:07,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:40:07,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:40:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:40:07,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:40:07,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:40:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:40:07,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:40:07,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:40:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:40:07,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:40:07,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:40:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:40:07,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:40:07,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:40:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:40:07,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:40:07,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:40:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:40:07,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:40:07,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:40:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:40:07,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:40:07,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:07,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:40:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:40:07,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:40:07,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:40:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6335 backedges. 547 proven. 11 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2020-10-29 07:40:08,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53547305] [2020-10-29 07:40:08,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:08,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:40:08,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957674670] [2020-10-29 07:40:08,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:40:08,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:08,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:40:08,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:40:08,906 INFO L87 Difference]: Start difference. First operand 7975 states and 8976 transitions. Second operand 5 states. [2020-10-29 07:40:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:10,452 INFO L93 Difference]: Finished difference Result 15768 states and 17771 transitions. [2020-10-29 07:40:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:40:10,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1456 [2020-10-29 07:40:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:10,475 INFO L225 Difference]: With dead ends: 15768 [2020-10-29 07:40:10,476 INFO L226 Difference]: Without dead ends: 7983 [2020-10-29 07:40:10,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 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 07:40:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7983 states. [2020-10-29 07:40:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7983 to 7607. [2020-10-29 07:40:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7607 states. [2020-10-29 07:40:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7607 states to 7607 states and 8334 transitions. [2020-10-29 07:40:10,638 INFO L78 Accepts]: Start accepts. Automaton has 7607 states and 8334 transitions. Word has length 1456 [2020-10-29 07:40:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:10,641 INFO L481 AbstractCegarLoop]: Abstraction has 7607 states and 8334 transitions. [2020-10-29 07:40:10,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:40:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 7607 states and 8334 transitions. [2020-10-29 07:40:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1498 [2020-10-29 07:40:10,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:10,673 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:10,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 07:40:10,673 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:10,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1734383848, now seen corresponding path program 1 times [2020-10-29 07:40:10,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:10,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641298298] [2020-10-29 07:40:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:11,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:11,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:12,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:15,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:15,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1531 [2020-10-29 07:40:15,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:40:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 07:40:15,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:15,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-29 07:40:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 07:40:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:16,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:40:16,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:40:16,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:16,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:40:16,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:16,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:16,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:40:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:40:16,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:40:16,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:16,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:40:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:40:16,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:40:16,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:40:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:40:16,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:16,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:40:16,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:16,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:16,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:40:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:40:16,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:16,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:40:16,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:16,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:40:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:40:16,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:16,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:40:16,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:16,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:40:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:40:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 07:40:16,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:40:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:40:16,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:16,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:40:16,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:16,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:40:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:40:16,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 07:40:16,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 07:40:16,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:40:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:16,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:16,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:40:16,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:16,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 07:40:16,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:16,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:40:16,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1233 [2020-10-29 07:40:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:17,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:17,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 07:40:17,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:17,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:40:17,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:17,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:17,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 07:40:17,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:17,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1363 [2020-10-29 07:40:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:17,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:17,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:40:17,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:17,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:40:17,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:17,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:40:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:17,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 1795 proven. 89 refuted. 0 times theorem prover too weak. 5365 trivial. 0 not checked. [2020-10-29 07:40:18,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641298298] [2020-10-29 07:40:18,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:18,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:40:18,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196526904] [2020-10-29 07:40:18,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:40:18,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:18,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:40:18,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:40:18,748 INFO L87 Difference]: Start difference. First operand 7607 states and 8334 transitions. Second operand 8 states. [2020-10-29 07:40:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:21,585 INFO L93 Difference]: Finished difference Result 15230 states and 16711 transitions. [2020-10-29 07:40:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:40:21,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1497 [2020-10-29 07:40:21,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:21,606 INFO L225 Difference]: With dead ends: 15230 [2020-10-29 07:40:21,606 INFO L226 Difference]: Without dead ends: 7813 [2020-10-29 07:40:21,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:40:21,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2020-10-29 07:40:21,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 7609. [2020-10-29 07:40:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7609 states. [2020-10-29 07:40:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7609 states to 7609 states and 8328 transitions. [2020-10-29 07:40:21,764 INFO L78 Accepts]: Start accepts. Automaton has 7609 states and 8328 transitions. Word has length 1497 [2020-10-29 07:40:21,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:21,766 INFO L481 AbstractCegarLoop]: Abstraction has 7609 states and 8328 transitions. [2020-10-29 07:40:21,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:40:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 7609 states and 8328 transitions. [2020-10-29 07:40:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1607 [2020-10-29 07:40:21,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:21,798 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 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] [2020-10-29 07:40:21,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 07:40:21,798 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:21,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:21,799 INFO L82 PathProgramCache]: Analyzing trace with hash 15404992, now seen corresponding path program 1 times [2020-10-29 07:40:21,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:21,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61448371] [2020-10-29 07:40:21,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:22,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:23,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:24,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:25,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1640 [2020-10-29 07:40:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:40:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 07:40:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1497 [2020-10-29 07:40:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:40:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:27,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:40:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:40:27,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:40:27,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:40:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:40:27,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:40:27,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:40:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:40:27,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:40:27,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:40:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:40:27,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:40:27,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:40:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:40:27,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:40:27,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:40:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:40:27,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:40:27,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:40:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:40:27,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:40:27,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:40:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:40:27,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:40:27,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:40:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:40:27,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:40:27,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:27,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:40:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:40:27,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:40:27,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:28,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:40:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:28,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:28,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 07:40:28,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 07:40:28,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:28,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 07:40:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:28,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1475 [2020-10-29 07:40:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:28,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:28,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:40:28,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 07:40:28,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:28,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:40:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7529 backedges. 1497 proven. 2 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2020-10-29 07:40:29,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61448371] [2020-10-29 07:40:29,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:29,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:40:29,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393496814] [2020-10-29 07:40:29,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:29,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:29,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:29,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:29,645 INFO L87 Difference]: Start difference. First operand 7609 states and 8328 transitions. Second operand 7 states. [2020-10-29 07:40:31,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:31,774 INFO L93 Difference]: Finished difference Result 15984 states and 17636 transitions. [2020-10-29 07:40:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:40:31,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1606 [2020-10-29 07:40:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:31,792 INFO L225 Difference]: With dead ends: 15984 [2020-10-29 07:40:31,792 INFO L226 Difference]: Without dead ends: 6711 [2020-10-29 07:40:31,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:40:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6711 states. [2020-10-29 07:40:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6711 to 6663. [2020-10-29 07:40:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6663 states. [2020-10-29 07:40:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6663 states to 6663 states and 7173 transitions. [2020-10-29 07:40:31,930 INFO L78 Accepts]: Start accepts. Automaton has 6663 states and 7173 transitions. Word has length 1606 [2020-10-29 07:40:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:31,931 INFO L481 AbstractCegarLoop]: Abstraction has 6663 states and 7173 transitions. [2020-10-29 07:40:31,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:40:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 6663 states and 7173 transitions. [2020-10-29 07:40:31,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1648 [2020-10-29 07:40:31,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:31,964 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2020-10-29 07:40:31,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 07:40:31,964 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2002496644, now seen corresponding path program 1 times [2020-10-29 07:40:31,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:31,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550325377] [2020-10-29 07:40:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:32,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:32,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1683 [2020-10-29 07:40:37,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:40:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-29 07:40:37,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-29 07:40:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:40:37,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:37,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:37,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:40:37,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:37,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:37,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:40:37,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:40:37,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:37,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:40:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:40:37,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:40:37,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:37,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:37,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:37,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:37,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:40:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:40:37,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:40:37,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:37,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:37,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:40:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:40:37,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:40:37,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:37,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:40:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:40:37,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:40:37,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:40:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:40:37,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:40:37,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:40:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:38,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:38,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:40:38,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:38,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:40:38,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:38,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:38,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:38,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:40:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:38,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:38,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:40:38,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:40:38,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:38,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:38,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:40:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:38,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:38,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:40:38,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:40:38,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:38,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:38,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:40:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:38,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:38,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:40:38,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:40:38,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:38,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:38,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:40:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:38,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:38,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:40:38,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:38,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:40:38,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:38,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:38,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:38,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:38,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:40:38,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2020-10-29 07:40:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:38,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:38,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:40:38,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 07:40:38,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:38,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:38,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:40:38,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:38,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1513 [2020-10-29 07:40:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:38,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:38,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:40:38,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:38,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:40:38,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:38,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:40:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:38,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8550 backedges. 1787 proven. 85 refuted. 0 times theorem prover too weak. 6678 trivial. 0 not checked. [2020-10-29 07:40:39,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550325377] [2020-10-29 07:40:39,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:39,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:40:39,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224432793] [2020-10-29 07:40:39,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:39,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:39,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:39,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:39,766 INFO L87 Difference]: Start difference. First operand 6663 states and 7173 transitions. Second operand 7 states. [2020-10-29 07:40:41,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:41,892 INFO L93 Difference]: Finished difference Result 12796 states and 13836 transitions. [2020-10-29 07:40:41,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:40:41,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1647 [2020-10-29 07:40:41,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:41,905 INFO L225 Difference]: With dead ends: 12796 [2020-10-29 07:40:41,905 INFO L226 Difference]: Without dead ends: 4477 [2020-10-29 07:40:41,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:40:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2020-10-29 07:40:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 4251. [2020-10-29 07:40:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4251 states. [2020-10-29 07:40:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 4420 transitions. [2020-10-29 07:40:42,000 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 4420 transitions. Word has length 1647 [2020-10-29 07:40:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:42,002 INFO L481 AbstractCegarLoop]: Abstraction has 4251 states and 4420 transitions. [2020-10-29 07:40:42,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:40:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 4420 transitions. [2020-10-29 07:40:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1672 [2020-10-29 07:40:42,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:42,036 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-29 07:40:42,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 07:40:42,037 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:42,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:42,038 INFO L82 PathProgramCache]: Analyzing trace with hash 872237276, now seen corresponding path program 1 times [2020-10-29 07:40:42,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:42,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090745760] [2020-10-29 07:40:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:42,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:43,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:43,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1707 [2020-10-29 07:40:43,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-10-29 07:40:43,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:43,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1561 [2020-10-29 07:40:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 07:40:43,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:44,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:40:44,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:40:44,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:40:44,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:40:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:40:44,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:40:44,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:40:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:40:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:40:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:40:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:40:44,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:40:44,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:40:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:40:44,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:40:44,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:40:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:40:44,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:40:44,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:40:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:40:44,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:40:44,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:40:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:40:44,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:40:44,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:40:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:40:44,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:40:44,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:40:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:40:44,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:40:44,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:40:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:40:44,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:40:44,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-29 07:40:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:45,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:45,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 07:40:45,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 07:40:45,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:45,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:40:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:45,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2020-10-29 07:40:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:45,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:45,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:45,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:40:45,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:40:45,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:45,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:40:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8692 backedges. 1660 proven. 2 refuted. 0 times theorem prover too weak. 7030 trivial. 0 not checked. [2020-10-29 07:40:47,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090745760] [2020-10-29 07:40:47,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:47,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:40:47,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820329736] [2020-10-29 07:40:47,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:40:47,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:47,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:40:47,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:40:47,059 INFO L87 Difference]: Start difference. First operand 4251 states and 4420 transitions. Second operand 8 states. [2020-10-29 07:40:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:50,031 INFO L93 Difference]: Finished difference Result 8314 states and 8651 transitions. [2020-10-29 07:40:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:40:50,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1671 [2020-10-29 07:40:50,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:50,045 INFO L225 Difference]: With dead ends: 8314 [2020-10-29 07:40:50,046 INFO L226 Difference]: Without dead ends: 4253 [2020-10-29 07:40:50,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:40:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2020-10-29 07:40:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4251. [2020-10-29 07:40:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4251 states. [2020-10-29 07:40:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 4403 transitions. [2020-10-29 07:40:50,137 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 4403 transitions. Word has length 1671 [2020-10-29 07:40:50,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:50,139 INFO L481 AbstractCegarLoop]: Abstraction has 4251 states and 4403 transitions. [2020-10-29 07:40:50,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:40:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 4403 transitions. [2020-10-29 07:40:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1797 [2020-10-29 07:40:50,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:50,176 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2020-10-29 07:40:50,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 07:40:50,176 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:50,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:50,177 INFO L82 PathProgramCache]: Analyzing trace with hash 578945888, now seen corresponding path program 1 times [2020-10-29 07:40:50,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:50,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437926562] [2020-10-29 07:40:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:50,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:55,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:55,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1834 [2020-10-29 07:40:55,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:55,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5254 [2020-10-29 07:40:55,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:55,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:55,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:40:55,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1688 [2020-10-29 07:40:55,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 07:40:55,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:56,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:56,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:56,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:56,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:40:56,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:56,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:56,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:56,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:56,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:40:56,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:56,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:40:56,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:56,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:56,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:40:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:56,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:56,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:56,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:40:56,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:40:56,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:56,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:56,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:56,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:40:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:56,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:56,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:40:56,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:40:56,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:56,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:56,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:40:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:56,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:56,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:40:56,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:40:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:56,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:56,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:40:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:56,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:56,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:40:56,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:40:56,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:56,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:56,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:56,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:40:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:56,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:56,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:40:56,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:40:56,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:56,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:56,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:56,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:40:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:56,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:56,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:40:56,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:56,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:40:56,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:56,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:40:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:56,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:56,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:56,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:40:56,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:56,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:40:56,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:56,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:57,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:40:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:57,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:57,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:57,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:40:57,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:57,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:40:57,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:57,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:57,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:57,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:40:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:57,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:57,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:57,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:40:57,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:40:57,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:57,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:57,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:40:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:57,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:57,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:57,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:40:57,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:57,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:40:57,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:57,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:57,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:57,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:57,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:57,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-29 07:40:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:57,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:57,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 07:40:57,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:57,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:40:57,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:57,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:57,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2020-10-29 07:40:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:57,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:57,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 07:40:57,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:40:57,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:57,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 07:40:57,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:57,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1662 [2020-10-29 07:40:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:57,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:57,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:40:57,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:40:57,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:57,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:40:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:40:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10175 backedges. 1738 proven. 60 refuted. 0 times theorem prover too weak. 8377 trivial. 0 not checked. [2020-10-29 07:40:59,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437926562] [2020-10-29 07:40:59,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:59,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:40:59,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524582281] [2020-10-29 07:40:59,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:40:59,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:59,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:40:59,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:40:59,409 INFO L87 Difference]: Start difference. First operand 4251 states and 4403 transitions. Second operand 8 states. [2020-10-29 07:41:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:02,116 INFO L93 Difference]: Finished difference Result 5370 states and 5589 transitions. [2020-10-29 07:41:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:41:02,117 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1796 [2020-10-29 07:41:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:02,127 INFO L225 Difference]: With dead ends: 5370 [2020-10-29 07:41:02,128 INFO L226 Difference]: Without dead ends: 5183 [2020-10-29 07:41:02,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:41:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2020-10-29 07:41:02,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 4805. [2020-10-29 07:41:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4805 states. [2020-10-29 07:41:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 5009 transitions. [2020-10-29 07:41:02,213 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 5009 transitions. Word has length 1796 [2020-10-29 07:41:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:02,215 INFO L481 AbstractCegarLoop]: Abstraction has 4805 states and 5009 transitions. [2020-10-29 07:41:02,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:41:02,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 5009 transitions. [2020-10-29 07:41:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1802 [2020-10-29 07:41:02,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:02,249 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2020-10-29 07:41:02,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 07:41:02,249 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:02,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1529139368, now seen corresponding path program 1 times [2020-10-29 07:41:02,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:02,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889755911] [2020-10-29 07:41:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:02,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:05,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking...