/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:22:58,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:22:58,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:22:58,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:22:58,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:22:58,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:22:58,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:22:58,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:22:58,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:22:58,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:22:58,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:22:58,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:22:58,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:22:58,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:22:58,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:22:58,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:22:58,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:22:58,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:22:58,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:22:58,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:22:58,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:22:58,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:22:58,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:22:58,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:22:58,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:22:58,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:22:58,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:22:58,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:22:58,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:22:58,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:22:58,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:22:58,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:22:58,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:22:58,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:22:58,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:22:58,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:22:58,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:22:58,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:22:58,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:22:58,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:22:58,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:22:58,855 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 [2020-10-27 18:22:58,908 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:22:58,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:22:58,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:22:58,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:22:58,913 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:22:58,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:22:58,914 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:22:58,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:22:58,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:22:58,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:22:58,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:22:58,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:22:58,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:22:58,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:22:58,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:22:58,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:22:58,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:22:58,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:22:58,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:22:58,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:22:58,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:22:58,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:22:58,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:22:58,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:22:58,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:22:58,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:22:58,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:22:58,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:22:58,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:22:58,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:22:59,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:22:59,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:22:59,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:22:59,443 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:22:59,443 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:22:59,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label15.c [2020-10-27 18:22:59,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fbd844a9/10082b01a75a44609581f723f616381b/FLAG841551193 [2020-10-27 18:23:00,538 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:23:00,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label15.c [2020-10-27 18:23:00,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fbd844a9/10082b01a75a44609581f723f616381b/FLAG841551193 [2020-10-27 18:23:01,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fbd844a9/10082b01a75a44609581f723f616381b [2020-10-27 18:23:01,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:23:01,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:23:01,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:23:01,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:23:01,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:23:01,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:23:01" (1/1) ... [2020-10-27 18:23:01,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df94d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:01, skipping insertion in model container [2020-10-27 18:23:01,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:23:01" (1/1) ... [2020-10-27 18:23:01,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:23:01,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:23:02,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:23:02,141 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:23:02,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:23:02,627 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:23:02,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:02 WrapperNode [2020-10-27 18:23:02,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:23:02,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:23:02,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:23:02,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:23:02,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:02" (1/1) ... [2020-10-27 18:23:02,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:02" (1/1) ... [2020-10-27 18:23:02,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:02" (1/1) ... [2020-10-27 18:23:02,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:02" (1/1) ... [2020-10-27 18:23:02,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:02" (1/1) ... [2020-10-27 18:23:02,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:02" (1/1) ... [2020-10-27 18:23:02,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:02" (1/1) ... [2020-10-27 18:23:02,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:23:02,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:23:02,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:23:02,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:23:02,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:02" (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 [2020-10-27 18:23:02,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:23:02,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:23:02,957 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:23:02,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:23:02,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:23:02,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:23:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:23:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:23:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:23:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:23:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:23:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:23:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:23:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:23:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:23:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:23:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:23:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:23:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:23:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:23:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:23:06,658 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:23:06,658 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:23:06,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:23:06 BoogieIcfgContainer [2020-10-27 18:23:06,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:23:06,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:23:06,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:23:06,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:23:06,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:23:01" (1/3) ... [2020-10-27 18:23:06,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcd3544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:23:06, skipping insertion in model container [2020-10-27 18:23:06,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:02" (2/3) ... [2020-10-27 18:23:06,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcd3544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:23:06, skipping insertion in model container [2020-10-27 18:23:06,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:23:06" (3/3) ... [2020-10-27 18:23:06,675 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label15.c [2020-10-27 18:23:06,690 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:23:06,697 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:23:06,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:23:06,769 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:23:06,769 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:23:06,769 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:23:06,769 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:23:06,769 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:23:06,769 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:23:06,769 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:23:06,770 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:23:06,801 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-27 18:23:06,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 18:23:06,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:06,810 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] [2020-10-27 18:23:06,810 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:06,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:06,818 INFO L82 PathProgramCache]: Analyzing trace with hash 270678297, now seen corresponding path program 1 times [2020-10-27 18:23:06,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:06,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465907817] [2020-10-27 18:23:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:07,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:07,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 18:23:07,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:07,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-27 18:23:07,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:23:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:23:07,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 18:23:07,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:23:07,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:07,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:07,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:07,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:07,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:23:07,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:07,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:23:07,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:23:07,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465907817] [2020-10-27 18:23:07,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:23:07,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:23:07,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98595673] [2020-10-27 18:23:07,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:23:07,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:07,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:23:07,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:23:07,858 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-27 18:23:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:23:13,810 INFO L93 Difference]: Finished difference Result 1250 states and 2231 transitions. [2020-10-27 18:23:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:23:13,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 18:23:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:23:13,836 INFO L225 Difference]: With dead ends: 1250 [2020-10-27 18:23:13,836 INFO L226 Difference]: Without dead ends: 730 [2020-10-27 18:23:13,848 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 [2020-10-27 18:23:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-27 18:23:13,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 713. [2020-10-27 18:23:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-27 18:23:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1207 transitions. [2020-10-27 18:23:13,984 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1207 transitions. Word has length 26 [2020-10-27 18:23:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:23:13,984 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1207 transitions. [2020-10-27 18:23:13,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:23:13,985 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1207 transitions. [2020-10-27 18:23:13,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 18:23:13,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:13,994 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 18:23:13,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:23:13,994 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:13,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:13,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1013953042, now seen corresponding path program 1 times [2020-10-27 18:23:13,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:13,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406372053] [2020-10-27 18:23:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:14,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:15,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:15,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 18:23:15,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:23:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1841 [2020-10-27 18:23:15,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:23:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:23:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:23:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:23:16,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:16,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:16,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:16,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:16,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:23:16,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:23:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:16,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:23:16,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:23:16,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:23:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:16,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:16,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:23:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 18:23:16,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:23:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:23:16,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406372053] [2020-10-27 18:23:16,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:23:16,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:23:16,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079684216] [2020-10-27 18:23:16,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:23:16,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:16,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:23:16,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:23:16,334 INFO L87 Difference]: Start difference. First operand 713 states and 1207 transitions. Second operand 6 states. [2020-10-27 18:23:26,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:23:26,144 INFO L93 Difference]: Finished difference Result 2682 states and 4657 transitions. [2020-10-27 18:23:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:23:26,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-27 18:23:26,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:23:26,161 INFO L225 Difference]: With dead ends: 2682 [2020-10-27 18:23:26,162 INFO L226 Difference]: Without dead ends: 1975 [2020-10-27 18:23:26,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:23:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-10-27 18:23:26,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1968. [2020-10-27 18:23:26,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1968 states. [2020-10-27 18:23:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2979 transitions. [2020-10-27 18:23:26,262 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2979 transitions. Word has length 95 [2020-10-27 18:23:26,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:23:26,263 INFO L481 AbstractCegarLoop]: Abstraction has 1968 states and 2979 transitions. [2020-10-27 18:23:26,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:23:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2979 transitions. [2020-10-27 18:23:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 18:23:26,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:26,268 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 18:23:26,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:23:26,269 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:26,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:26,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1091660341, now seen corresponding path program 1 times [2020-10-27 18:23:26,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:26,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55079851] [2020-10-27 18:23:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:26,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:26,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:27,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:27,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:23:27,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:23:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-27 18:23:27,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 18:23:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:23:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 18:23:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:27,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:27,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:27,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:27,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:27,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:23:27,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:23:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:27,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:23:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:27,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:27,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:27,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:23:27,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:23:27,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-27 18:23:27,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:23:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:23:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 18:23:27,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:27,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 18:23:27,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55079851] [2020-10-27 18:23:27,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:23:27,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:23:27,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041452107] [2020-10-27 18:23:27,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:23:27,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:27,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:23:27,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:23:27,761 INFO L87 Difference]: Start difference. First operand 1968 states and 2979 transitions. Second operand 8 states. [2020-10-27 18:23:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:23:37,741 INFO L93 Difference]: Finished difference Result 6465 states and 10023 transitions. [2020-10-27 18:23:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 18:23:37,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-10-27 18:23:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:23:37,776 INFO L225 Difference]: With dead ends: 6465 [2020-10-27 18:23:37,776 INFO L226 Difference]: Without dead ends: 4503 [2020-10-27 18:23:37,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-27 18:23:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2020-10-27 18:23:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 3240. [2020-10-27 18:23:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3240 states. [2020-10-27 18:23:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 4483 transitions. [2020-10-27 18:23:37,961 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 4483 transitions. Word has length 112 [2020-10-27 18:23:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:23:37,962 INFO L481 AbstractCegarLoop]: Abstraction has 3240 states and 4483 transitions. [2020-10-27 18:23:37,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:23:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 4483 transitions. [2020-10-27 18:23:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 18:23:37,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:37,975 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:23:37,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:23:37,975 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:37,977 INFO L82 PathProgramCache]: Analyzing trace with hash 948872088, now seen corresponding path program 1 times [2020-10-27 18:23:37,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:37,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320976426] [2020-10-27 18:23:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:38,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:40,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:40,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 18:23:40,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:23:40,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2176 [2020-10-27 18:23:40,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:23:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 18:23:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 18:23:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:40,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:40,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:40,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:40,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:40,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:23:40,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:23:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:23:40,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:40,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:23:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:40,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:40,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:40,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:23:40,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:40,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 18:23:40,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:40,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 18:23:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:23:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:40,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:41,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:41,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:23:41,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:23:41,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-27 18:23:41,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:41,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:23:41,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:23:41,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:23:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 18:23:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:23:41,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320976426] [2020-10-27 18:23:41,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:23:41,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:23:41,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90475164] [2020-10-27 18:23:41,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:23:41,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:41,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:23:41,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:23:41,207 INFO L87 Difference]: Start difference. First operand 3240 states and 4483 transitions. Second operand 7 states. [2020-10-27 18:23:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:23:50,512 INFO L93 Difference]: Finished difference Result 8502 states and 12850 transitions. [2020-10-27 18:23:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:23:50,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-27 18:23:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:23:50,555 INFO L225 Difference]: With dead ends: 8502 [2020-10-27 18:23:50,556 INFO L226 Difference]: Without dead ends: 5216 [2020-10-27 18:23:50,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:23:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2020-10-27 18:23:50,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 5156. [2020-10-27 18:23:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5156 states. [2020-10-27 18:23:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 7441 transitions. [2020-10-27 18:23:50,778 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 7441 transitions. Word has length 204 [2020-10-27 18:23:50,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:23:50,779 INFO L481 AbstractCegarLoop]: Abstraction has 5156 states and 7441 transitions. [2020-10-27 18:23:50,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:23:50,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 7441 transitions. [2020-10-27 18:23:50,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-27 18:23:50,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:50,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:23:50,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:23:50,785 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:50,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:50,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1177731486, now seen corresponding path program 1 times [2020-10-27 18:23:50,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:50,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119661238] [2020-10-27 18:23:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:51,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:52,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:55,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:55,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:23:55,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:23:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4982 [2020-10-27 18:23:55,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:23:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-27 18:23:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 18:23:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:55,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:56,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:56,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:56,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:56,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:23:56,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:23:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:23:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:56,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:23:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:56,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:56,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 18:23:56,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 18:23:56,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-27 18:23:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-27 18:23:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:56,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:56,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:23:56,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:23:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-27 18:23:56,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:23:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:23:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:23:56,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:23:57,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119661238] [2020-10-27 18:23:57,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:23:57,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:23:57,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827431910] [2020-10-27 18:23:57,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:23:57,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:57,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:23:57,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:23:57,041 INFO L87 Difference]: Start difference. First operand 5156 states and 7441 transitions. Second operand 7 states. [2020-10-27 18:24:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:24:06,492 INFO L93 Difference]: Finished difference Result 10369 states and 14983 transitions. [2020-10-27 18:24:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:24:06,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-27 18:24:06,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:24:06,528 INFO L225 Difference]: With dead ends: 10369 [2020-10-27 18:24:06,529 INFO L226 Difference]: Without dead ends: 5192 [2020-10-27 18:24:06,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:24:06,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5192 states. [2020-10-27 18:24:06,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5192 to 5158. [2020-10-27 18:24:06,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5158 states. [2020-10-27 18:24:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 7128 transitions. [2020-10-27 18:24:06,735 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 7128 transitions. Word has length 271 [2020-10-27 18:24:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:24:06,736 INFO L481 AbstractCegarLoop]: Abstraction has 5158 states and 7128 transitions. [2020-10-27 18:24:06,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:24:06,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 7128 transitions. [2020-10-27 18:24:06,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-27 18:24:06,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:24:06,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:24:06,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:24:06,745 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:24:06,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:24:06,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1651478341, now seen corresponding path program 1 times [2020-10-27 18:24:06,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:24:06,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495313648] [2020-10-27 18:24:06,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:24:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:06,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:07,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:07,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:07,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:11,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:11,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-27 18:24:11,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:24:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 18:24:11,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:24:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-27 18:24:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 18:24:11,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:24:12,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:12,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:12,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:12,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:12,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:24:12,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:12,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:12,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:12,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-27 18:24:12,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:12,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 18:24:12,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:12,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:12,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:12,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-27 18:24:12,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-27 18:24:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:13,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:13,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:24:13,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:24:13,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-27 18:24:13,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:24:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:24:13,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:24:13,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:24:13,536 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-27 18:24:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:24:14,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495313648] [2020-10-27 18:24:14,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:14,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 18:24:14,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688647961] [2020-10-27 18:24:14,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 18:24:14,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:14,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 18:24:14,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:24:14,176 INFO L87 Difference]: Start difference. First operand 5158 states and 7128 transitions. Second operand 10 states. [2020-10-27 18:24:14,509 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-27 18:24:14,951 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2020-10-27 18:24:15,238 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-27 18:24:15,481 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-10-27 18:24:16,987 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-27 18:24:17,591 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2020-10-27 18:24:18,001 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2020-10-27 18:24:21,225 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-10-27 18:24:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:24:24,626 INFO L93 Difference]: Finished difference Result 10478 states and 14599 transitions. [2020-10-27 18:24:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 18:24:24,628 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 346 [2020-10-27 18:24:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:24:24,658 INFO L225 Difference]: With dead ends: 10478 [2020-10-27 18:24:24,658 INFO L226 Difference]: Without dead ends: 5245 [2020-10-27 18:24:24,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-27 18:24:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2020-10-27 18:24:24,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 5180. [2020-10-27 18:24:24,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5180 states. [2020-10-27 18:24:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 7177 transitions. [2020-10-27 18:24:24,861 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 7177 transitions. Word has length 346 [2020-10-27 18:24:24,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:24:24,862 INFO L481 AbstractCegarLoop]: Abstraction has 5180 states and 7177 transitions. [2020-10-27 18:24:24,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 18:24:24,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 7177 transitions. [2020-10-27 18:24:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-27 18:24:24,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:24:24,870 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:24:24,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:24:24,871 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:24:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:24:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash 520537612, now seen corresponding path program 1 times [2020-10-27 18:24:24,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:24:24,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804910430] [2020-10-27 18:24:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:24:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:25,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:30,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:30,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-27 18:24:30,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:24:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 18:24:30,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:24:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-27 18:24:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 18:24:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:30,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:30,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:30,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:30,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:30,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:24:30,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:30,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:30,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:30,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:30,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:30,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:24:30,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:30,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:24:30,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:30,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:30,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:24:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:30,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:30,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:30,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:24:30,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:24:30,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:24:30,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:30,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-27 18:24:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:30,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:30,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:24:30,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:24:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-27 18:24:30,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:24:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:24:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:24:30,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 18:24:31,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804910430] [2020-10-27 18:24:31,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:31,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 18:24:31,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341956666] [2020-10-27 18:24:31,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 18:24:31,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:31,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 18:24:31,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:24:31,664 INFO L87 Difference]: Start difference. First operand 5180 states and 7177 transitions. Second operand 10 states. [2020-10-27 18:24:31,952 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-27 18:24:32,362 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-10-27 18:24:32,684 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-27 18:24:32,967 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2020-10-27 18:24:34,870 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-27 18:24:35,550 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-10-27 18:24:35,902 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-10-27 18:24:44,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:24:44,944 INFO L93 Difference]: Finished difference Result 10537 states and 14696 transitions. [2020-10-27 18:24:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 18:24:44,945 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 378 [2020-10-27 18:24:44,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:24:44,970 INFO L225 Difference]: With dead ends: 10537 [2020-10-27 18:24:44,971 INFO L226 Difference]: Without dead ends: 5222 [2020-10-27 18:24:44,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 18:24:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2020-10-27 18:24:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5167. [2020-10-27 18:24:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5167 states. [2020-10-27 18:24:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 7000 transitions. [2020-10-27 18:24:45,210 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 7000 transitions. Word has length 378 [2020-10-27 18:24:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:24:45,211 INFO L481 AbstractCegarLoop]: Abstraction has 5167 states and 7000 transitions. [2020-10-27 18:24:45,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 18:24:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 7000 transitions. [2020-10-27 18:24:45,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-27 18:24:45,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:24:45,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:24:45,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:24:45,223 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:24:45,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:24:45,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1054634426, now seen corresponding path program 1 times [2020-10-27 18:24:45,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:24:45,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152284965] [2020-10-27 18:24:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:24:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:50,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:50,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-27 18:24:50,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:24:50,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 18:24:50,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:50,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:50,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-27 18:24:50,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 18:24:50,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:50,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:50,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:50,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:50,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:24:50,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:50,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:50,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:50,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:50,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:50,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:50,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:50,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:24:50,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:50,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 18:24:50,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:50,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:24:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:50,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:50,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:50,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 18:24:50,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:24:50,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:24:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:50,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-27 18:24:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:50,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:50,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:24:50,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:50,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 18:24:50,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:24:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 18:24:50,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-27 18:24:51,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152284965] [2020-10-27 18:24:51,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:51,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:24:51,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767347903] [2020-10-27 18:24:51,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:24:51,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:51,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:24:51,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:24:51,085 INFO L87 Difference]: Start difference. First operand 5167 states and 7000 transitions. Second operand 7 states. [2020-10-27 18:25:01,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:01,437 INFO L93 Difference]: Finished difference Result 13611 states and 19792 transitions. [2020-10-27 18:25:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:25:01,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-27 18:25:01,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:01,489 INFO L225 Difference]: With dead ends: 13611 [2020-10-27 18:25:01,490 INFO L226 Difference]: Without dead ends: 8454 [2020-10-27 18:25:01,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:25:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8454 states. [2020-10-27 18:25:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8454 to 8443. [2020-10-27 18:25:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8443 states. [2020-10-27 18:25:01,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8443 states to 8443 states and 11939 transitions. [2020-10-27 18:25:01,856 INFO L78 Accepts]: Start accepts. Automaton has 8443 states and 11939 transitions. Word has length 392 [2020-10-27 18:25:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:01,857 INFO L481 AbstractCegarLoop]: Abstraction has 8443 states and 11939 transitions. [2020-10-27 18:25:01,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:25:01,858 INFO L276 IsEmpty]: Start isEmpty. Operand 8443 states and 11939 transitions. [2020-10-27 18:25:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-27 18:25:01,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:01,869 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:25:01,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:25:01,870 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:01,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:01,870 INFO L82 PathProgramCache]: Analyzing trace with hash 671206298, now seen corresponding path program 1 times [2020-10-27 18:25:01,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:01,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748778003] [2020-10-27 18:25:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:04,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:07,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:07,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-27 18:25:07,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:25:07,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 18:25:07,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-27 18:25:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 18:25:07,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:07,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:07,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:07,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:07,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:07,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:25:07,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:07,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:07,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:07,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:25:07,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:25:07,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:25:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:07,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:07,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:07,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:25:07,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:25:07,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:25:07,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:25:07,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:25:07,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-27 18:25:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:07,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:07,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:07,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:25:07,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 18:25:07,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:25:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 18:25:07,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-27 18:25:07,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748778003] [2020-10-27 18:25:07,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:07,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:25:07,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777275824] [2020-10-27 18:25:07,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:25:07,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:07,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:25:07,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:25:07,879 INFO L87 Difference]: Start difference. First operand 8443 states and 11939 transitions. Second operand 8 states. [2020-10-27 18:25:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:26,833 INFO L93 Difference]: Finished difference Result 23343 states and 36634 transitions. [2020-10-27 18:25:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 18:25:26,834 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 398 [2020-10-27 18:25:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:26,923 INFO L225 Difference]: With dead ends: 23343 [2020-10-27 18:25:26,923 INFO L226 Difference]: Without dead ends: 14910 [2020-10-27 18:25:26,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-27 18:25:26,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14910 states. [2020-10-27 18:25:27,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14910 to 14785. [2020-10-27 18:25:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14785 states. [2020-10-27 18:25:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14785 states to 14785 states and 21447 transitions. [2020-10-27 18:25:27,561 INFO L78 Accepts]: Start accepts. Automaton has 14785 states and 21447 transitions. Word has length 398 [2020-10-27 18:25:27,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:27,562 INFO L481 AbstractCegarLoop]: Abstraction has 14785 states and 21447 transitions. [2020-10-27 18:25:27,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:25:27,563 INFO L276 IsEmpty]: Start isEmpty. Operand 14785 states and 21447 transitions. [2020-10-27 18:25:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-27 18:25:27,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:27,576 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-27 18:25:27,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:25:27,577 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:27,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:27,578 INFO L82 PathProgramCache]: Analyzing trace with hash -769755224, now seen corresponding path program 1 times [2020-10-27 18:25:27,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:27,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059136698] [2020-10-27 18:25:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:28,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:32,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:32,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-27 18:25:32,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:25:32,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 18:25:32,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 412 [2020-10-27 18:25:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:25:32,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:32,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:32,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:32,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:32,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:32,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:25:32,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:32,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:33,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:33,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:25:33,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 18:25:33,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:25:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:33,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:25:33,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:25:33,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-27 18:25:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:33,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:33,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:33,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:25:33,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:25:33,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:25:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-27 18:25:33,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059136698] [2020-10-27 18:25:33,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:33,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:25:33,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984230140] [2020-10-27 18:25:33,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:25:33,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:33,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:25:33,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:25:33,353 INFO L87 Difference]: Start difference. First operand 14785 states and 21447 transitions. Second operand 5 states. [2020-10-27 18:25:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:42,847 INFO L93 Difference]: Finished difference Result 28543 states and 41292 transitions. [2020-10-27 18:25:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:25:42,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2020-10-27 18:25:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:42,949 INFO L225 Difference]: With dead ends: 28543 [2020-10-27 18:25:42,949 INFO L226 Difference]: Without dead ends: 19141 [2020-10-27 18:25:42,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:25:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19141 states. [2020-10-27 18:25:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19141 to 19139. [2020-10-27 18:25:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19139 states. [2020-10-27 18:25:43,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19139 states to 19139 states and 27930 transitions. [2020-10-27 18:25:43,713 INFO L78 Accepts]: Start accepts. Automaton has 19139 states and 27930 transitions. Word has length 424 [2020-10-27 18:25:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:43,714 INFO L481 AbstractCegarLoop]: Abstraction has 19139 states and 27930 transitions. [2020-10-27 18:25:43,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:25:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 19139 states and 27930 transitions. [2020-10-27 18:25:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-27 18:25:43,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:43,739 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:25:43,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:25:43,739 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:43,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:43,741 INFO L82 PathProgramCache]: Analyzing trace with hash 108998956, now seen corresponding path program 1 times [2020-10-27 18:25:43,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:43,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349347289] [2020-10-27 18:25:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:43,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:45,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:48,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:48,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-27 18:25:48,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:25:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-27 18:25:48,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:25:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 354 [2020-10-27 18:25:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 18:25:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:49,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:49,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:49,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:49,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:25:49,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:49,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:49,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-27 18:25:49,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:49,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 18:25:49,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:49,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:49,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:49,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:49,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:49,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-27 18:25:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:49,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:49,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:25:49,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:49,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 18:25:49,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:49,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:49,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:49,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:25:49,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-27 18:25:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:49,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:49,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:49,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:25:49,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:25:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-27 18:25:49,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:25:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:25:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:25:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:50,328 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-27 18:25:50,578 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-27 18:25:50,734 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-27 18:25:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:25:51,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349347289] [2020-10-27 18:25:51,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:51,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 18:25:51,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883920747] [2020-10-27 18:25:51,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 18:25:51,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:51,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 18:25:51,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:25:51,215 INFO L87 Difference]: Start difference. First operand 19139 states and 27930 transitions. Second operand 10 states. [2020-10-27 18:25:51,658 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-27 18:25:52,288 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2020-10-27 18:25:52,700 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-27 18:25:53,062 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-10-27 18:25:55,803 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-27 18:25:56,957 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-10-27 18:25:57,416 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-10-27 18:26:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:26:04,811 INFO L93 Difference]: Finished difference Result 38365 states and 56297 transitions. [2020-10-27 18:26:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 18:26:04,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 451 [2020-10-27 18:26:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:26:04,906 INFO L225 Difference]: With dead ends: 38365 [2020-10-27 18:26:04,906 INFO L226 Difference]: Without dead ends: 19214 [2020-10-27 18:26:04,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-10-27 18:26:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19214 states. [2020-10-27 18:26:05,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19214 to 19143. [2020-10-27 18:26:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19143 states. [2020-10-27 18:26:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19143 states to 19143 states and 27885 transitions. [2020-10-27 18:26:05,568 INFO L78 Accepts]: Start accepts. Automaton has 19143 states and 27885 transitions. Word has length 451 [2020-10-27 18:26:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:26:05,569 INFO L481 AbstractCegarLoop]: Abstraction has 19143 states and 27885 transitions. [2020-10-27 18:26:05,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 18:26:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 19143 states and 27885 transitions. [2020-10-27 18:26:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-27 18:26:05,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:26:05,585 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:26:05,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:26:05,585 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:26:05,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:26:05,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1779735439, now seen corresponding path program 1 times [2020-10-27 18:26:05,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:26:05,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299948275] [2020-10-27 18:26:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:26:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:05,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:06,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:10,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:10,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-27 18:26:10,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:26:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 18:26:10,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:26:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 372 [2020-10-27 18:26:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 18:26:10,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:26:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:10,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:11,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:11,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:26:11,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:11,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:26:11,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:11,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:11,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:11,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:11,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:11,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:26:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:11,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:11,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:11,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:26:11,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:11,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:26:11,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:11,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:11,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:11,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:26:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:11,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:11,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 18:26:11,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:26:11,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-27 18:26:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:11,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:11,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 18:26:11,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:11,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 18:26:11,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:11,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:26:11,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:11,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:26:11,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-27 18:26:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:11,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:11,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:11,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:26:11,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:26:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 18:26:11,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:26:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:26:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 18:26:11,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-27 18:26:11,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299948275] [2020-10-27 18:26:11,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:26:11,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:26:11,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925444048] [2020-10-27 18:26:11,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:26:11,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:26:11,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:26:11,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:26:11,717 INFO L87 Difference]: Start difference. First operand 19143 states and 27885 transitions. Second operand 7 states. [2020-10-27 18:26:14,804 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-27 18:26:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:26:23,437 INFO L93 Difference]: Finished difference Result 33288 states and 50884 transitions. [2020-10-27 18:26:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:26:23,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-27 18:26:23,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:26:23,576 INFO L225 Difference]: With dead ends: 33288 [2020-10-27 18:26:23,577 INFO L226 Difference]: Without dead ends: 19481 [2020-10-27 18:26:23,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:26:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19481 states. [2020-10-27 18:26:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19481 to 19143. [2020-10-27 18:26:24,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19143 states. [2020-10-27 18:26:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19143 states to 19143 states and 27828 transitions. [2020-10-27 18:26:24,414 INFO L78 Accepts]: Start accepts. Automaton has 19143 states and 27828 transitions. Word has length 470 [2020-10-27 18:26:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:26:24,415 INFO L481 AbstractCegarLoop]: Abstraction has 19143 states and 27828 transitions. [2020-10-27 18:26:24,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:26:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand 19143 states and 27828 transitions. [2020-10-27 18:26:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-27 18:26:24,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:26:24,434 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:26:24,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:26:24,434 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:26:24,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:26:24,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1721483037, now seen corresponding path program 1 times [2020-10-27 18:26:24,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:26:24,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75220734] [2020-10-27 18:26:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:26:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:24,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:29,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:29,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-27 18:26:29,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:26:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 18:26:29,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:26:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 387 [2020-10-27 18:26:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 18:26:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:29,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:26:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:29,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:29,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:26:29,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:26:29,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:29,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:29,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:26:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:29,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:29,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-27 18:26:29,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:29,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 18:26:29,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:29,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:30,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-27 18:26:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:30,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:30,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:30,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 18:26:30,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 18:26:30,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:26:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 18:26:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:30,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-27 18:26:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:30,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:30,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:26:30,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 18:26:30,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:26:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:26:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 18:26:30,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 18:26:30,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75220734] [2020-10-27 18:26:30,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:26:30,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:26:30,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516293181] [2020-10-27 18:26:30,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:26:30,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:26:30,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:26:30,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:26:30,429 INFO L87 Difference]: Start difference. First operand 19143 states and 27828 transitions. Second operand 7 states.