/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:17:45,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:17:45,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:17:45,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:17:45,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:17:45,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:17:45,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:17:45,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:17:45,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:17:45,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:17:45,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:17:45,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:17:45,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:17:45,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:17:45,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:17:45,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:17:45,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:17:45,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:17:45,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:17:45,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:17:45,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:17:45,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:17:45,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:17:45,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:17:45,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:17:45,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:17:45,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:17:45,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:17:45,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:17:45,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:17:45,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:17:45,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:17:45,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:17:45,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:17:45,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:17:45,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:17:45,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:17:45,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:17:45,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:17:45,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:17:45,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:17:45,170 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 01:17:45,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:17:45,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:17:45,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:17:45,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:17:45,234 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:17:45,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:17:45,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:17:45,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:17:45,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:17:45,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:17:45,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:17:45,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:17:45,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:17:45,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:17:45,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:17:45,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:17:45,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:17:45,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:17:45,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:17:45,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:17:45,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:17:45,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:17:45,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:17:45,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:17:45,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:17:45,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:17:45,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:17:45,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:17:45,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:17:45,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:17:45,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:17:45,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:17:45,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:17:45,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:17:45,698 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:17:45,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2020-10-27 01:17:45,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b433ee43/3bb4f1815c5d4716b9c3e042a9656d86/FLAG33bb2f3ef [2020-10-27 01:17:46,428 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:17:46,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2020-10-27 01:17:46,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b433ee43/3bb4f1815c5d4716b9c3e042a9656d86/FLAG33bb2f3ef [2020-10-27 01:17:46,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b433ee43/3bb4f1815c5d4716b9c3e042a9656d86 [2020-10-27 01:17:46,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:17:46,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:17:46,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:17:46,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:17:46,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:17:46,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:17:46" (1/1) ... [2020-10-27 01:17:46,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183968f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:46, skipping insertion in model container [2020-10-27 01:17:46,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:17:46" (1/1) ... [2020-10-27 01:17:46,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:17:46,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:17:47,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:17:47,349 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:17:47,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:17:47,532 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:17:47,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:47 WrapperNode [2020-10-27 01:17:47,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:17:47,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:17:47,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:17:47,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:17:47,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:47" (1/1) ... [2020-10-27 01:17:47,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:47" (1/1) ... [2020-10-27 01:17:47,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:47" (1/1) ... [2020-10-27 01:17:47,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:47" (1/1) ... [2020-10-27 01:17:47,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:47" (1/1) ... [2020-10-27 01:17:47,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:47" (1/1) ... [2020-10-27 01:17:47,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:47" (1/1) ... [2020-10-27 01:17:47,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:17:47,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:17:47,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:17:47,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:17:47,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:17:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:17:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:17:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:17:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:17:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:17:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 01:17:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-27 01:17:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-27 01:17:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-27 01:17:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-27 01:17:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-10-27 01:17:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:17:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:17:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:17:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:17:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:17:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:17:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:17:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:17:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:17:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:17:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:17:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:17:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:17:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:17:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:17:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:17:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:17:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:17:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:17:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:17:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:17:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:17:47,770 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:17:47,770 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:17:47,770 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:17:47,770 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:17:47,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:17:47,770 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:17:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:17:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:17:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:17:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:17:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:17:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:17:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:17:47,772 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:17:47,772 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:17:47,772 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:17:47,772 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:17:47,772 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:17:47,772 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:17:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:17:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:17:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:17:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:17:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:17:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:17:47,774 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:17:47,774 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:17:47,774 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:17:47,774 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:17:47,774 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:17:47,774 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:17:47,774 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:17:47,775 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:17:47,775 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:17:47,775 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:17:47,775 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:17:47,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:17:47,775 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:17:47,776 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:17:47,776 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:17:47,776 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:17:47,776 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:17:47,776 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:17:47,776 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:17:47,776 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:17:47,777 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:17:47,777 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:17:47,777 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:17:47,777 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:17:47,777 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:17:47,777 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:17:47,778 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:17:47,778 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:17:47,778 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:17:47,778 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:17:47,778 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:17:47,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:17:47,778 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:17:47,778 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:17:47,779 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:17:47,779 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:17:47,779 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:17:47,779 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:17:47,779 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:17:47,779 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:17:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:17:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:17:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:17:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:17:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:17:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:17:47,780 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:17:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:17:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:17:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:17:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:17:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 01:17:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-27 01:17:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:17:47,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:17:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-27 01:17:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:17:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-27 01:17:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:17:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-27 01:17:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-10-27 01:17:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:17:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:17:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:17:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:17:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:17:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:17:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:17:48,254 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 01:17:48,602 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:17:48,602 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-27 01:17:48,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:17:48 BoogieIcfgContainer [2020-10-27 01:17:48,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:17:48,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:17:48,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:17:48,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:17:48,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:17:46" (1/3) ... [2020-10-27 01:17:48,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bb680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:17:48, skipping insertion in model container [2020-10-27 01:17:48,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:17:47" (2/3) ... [2020-10-27 01:17:48,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bb680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:17:48, skipping insertion in model container [2020-10-27 01:17:48,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:17:48" (3/3) ... [2020-10-27 01:17:48,613 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-2.i [2020-10-27 01:17:48,625 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:17:48,630 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:17:48,648 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:17:48,676 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:17:48,676 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:17:48,676 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:17:48,676 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:17:48,676 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:17:48,677 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:17:48,677 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:17:48,677 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:17:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-27 01:17:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 01:17:48,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:17:48,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:17:48,705 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:17:48,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:17:48,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2006705534, now seen corresponding path program 1 times [2020-10-27 01:17:48,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:17:48,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018773197] [2020-10-27 01:17:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:17:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:48,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:48,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:49,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 01:17:49,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:17:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-27 01:17:49,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:17:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:49,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 01:17:49,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:17:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:49,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:17:49,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:17:49,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:17:49,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:17:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:17:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:49,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:49,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:17:49,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:17:49,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:17:49,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:49,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:49,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:17:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:49,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:49,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 01:17:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:49,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:17:49,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:17:49,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:17:49,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:49,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:17:49,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:49,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:49,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:17:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:49,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:17:49,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:17:49,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:17:49,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:17:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:49,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:17:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:49,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:17:49,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:17:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:17:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:17:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 01:17:49,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018773197] [2020-10-27 01:17:49,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:17:49,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:17:49,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148304026] [2020-10-27 01:17:49,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:17:49,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:17:49,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:17:49,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:17:49,472 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 4 states. [2020-10-27 01:17:49,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:17:49,747 INFO L93 Difference]: Finished difference Result 139 states and 188 transitions. [2020-10-27 01:17:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:17:49,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-27 01:17:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:17:49,759 INFO L225 Difference]: With dead ends: 139 [2020-10-27 01:17:49,759 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 01:17:49,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 01:17:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 01:17:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-10-27 01:17:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 01:17:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-10-27 01:17:49,813 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 39 [2020-10-27 01:17:49,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:17:49,814 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-10-27 01:17:49,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:17:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-10-27 01:17:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 01:17:49,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:17:49,817 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 01:17:49,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:17:49,817 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:17:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:17:49,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1803513068, now seen corresponding path program 1 times [2020-10-27 01:17:49,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:17:49,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507337641] [2020-10-27 01:17:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:17:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:50,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:53,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:53,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 01:17:53,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:17:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3512 [2020-10-27 01:17:53,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:17:53,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:17:53,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:17:53,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:53,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:17:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:53,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:17:53,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:17:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:17:53,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:17:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:53,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:17:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:53,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:53,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:53,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:17:53,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:17:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 01:17:53,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:17:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:17:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:17:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:53,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:17:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:53,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:53,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:53,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:17:53,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:17:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:17:53,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:17:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:17:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:17:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:17:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:53,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:53,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:53,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:17:53,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:17:53,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:17:53,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:17:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:17:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:17:53,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:17:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:53,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:53,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:53,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:17:53,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:17:53,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:17:53,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:17:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:53,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 01:17:53,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507337641] [2020-10-27 01:17:53,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:17:53,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 01:17:53,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288244771] [2020-10-27 01:17:53,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:17:53,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:17:53,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:17:53,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:17:53,657 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 11 states. [2020-10-27 01:17:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:17:54,433 INFO L93 Difference]: Finished difference Result 136 states and 176 transitions. [2020-10-27 01:17:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 01:17:54,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-27 01:17:54,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:17:54,437 INFO L225 Difference]: With dead ends: 136 [2020-10-27 01:17:54,437 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 01:17:54,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:17:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 01:17:54,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2020-10-27 01:17:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 01:17:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2020-10-27 01:17:54,457 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 44 [2020-10-27 01:17:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:17:54,457 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2020-10-27 01:17:54,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:17:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2020-10-27 01:17:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 01:17:54,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:17:54,462 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 01:17:54,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:17:54,463 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:17:54,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:17:54,463 INFO L82 PathProgramCache]: Analyzing trace with hash 279797460, now seen corresponding path program 1 times [2020-10-27 01:17:54,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:17:54,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770423938] [2020-10-27 01:17:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:17:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:54,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:55,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:55,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 01:17:55,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:17:55,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-27 01:17:55,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:17:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:17:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:17:55,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:55,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:17:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:55,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:55,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:17:55,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:17:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:17:55,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:17:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:17:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:55,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:55,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:17:55,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:17:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:17:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:17:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:17:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:17:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:55,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:17:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:55,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:55,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:55,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:17:55,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:17:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:17:55,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:55,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:17:55,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:17:55,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:17:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:55,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:17:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:55,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:55,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:17:55,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:17:55,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:17:55,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:17:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:55,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:17:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:17:55,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:17:55,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:17:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:17:55,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:17:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:17:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:17:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:17:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:17:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 01:17:55,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770423938] [2020-10-27 01:17:55,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:17:55,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 01:17:55,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399314132] [2020-10-27 01:17:55,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:17:55,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:17:55,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:17:55,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:17:55,449 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand 11 states. [2020-10-27 01:17:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:17:56,264 INFO L93 Difference]: Finished difference Result 138 states and 178 transitions. [2020-10-27 01:17:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:17:56,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-27 01:17:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:17:56,268 INFO L225 Difference]: With dead ends: 138 [2020-10-27 01:17:56,269 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 01:17:56,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:17:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 01:17:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2020-10-27 01:17:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 01:17:56,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-27 01:17:56,298 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 44 [2020-10-27 01:17:56,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:17:56,299 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-27 01:17:56,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:17:56,299 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-27 01:17:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 01:17:56,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:17:56,302 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-27 01:17:56,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:17:56,303 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:17:56,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:17:56,305 INFO L82 PathProgramCache]: Analyzing trace with hash 984589588, now seen corresponding path program 1 times [2020-10-27 01:17:56,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:17:56,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977433506] [2020-10-27 01:17:56,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:17:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:17:56,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:58,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:17:58,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:00,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 01:18:00,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 01:18:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4113 [2020-10-27 01:18:00,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:18:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:18:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:18:00,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:18:00,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:00,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:00,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:00,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:00,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:00,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:00,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:00,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:00,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:18:00,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:18:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 01:18:00,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:18:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:18:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:00,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:18:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:00,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:18:00,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:18:00,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:18:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 01:18:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:00,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:00,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:18:00,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:18:00,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:18:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:18:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:00,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:00,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:00,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:18:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 01:18:00,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977433506] [2020-10-27 01:18:00,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:00,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 01:18:00,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827951837] [2020-10-27 01:18:00,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 01:18:00,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:00,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 01:18:00,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:18:00,841 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 13 states. [2020-10-27 01:18:01,468 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-27 01:18:01,979 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-27 01:18:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:02,503 INFO L93 Difference]: Finished difference Result 165 states and 218 transitions. [2020-10-27 01:18:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:18:02,504 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-10-27 01:18:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:02,507 INFO L225 Difference]: With dead ends: 165 [2020-10-27 01:18:02,507 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 01:18:02,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:18:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 01:18:02,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2020-10-27 01:18:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 01:18:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2020-10-27 01:18:02,556 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 47 [2020-10-27 01:18:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:02,557 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2020-10-27 01:18:02,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 01:18:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2020-10-27 01:18:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 01:18:02,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:02,564 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-27 01:18:02,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:18:02,564 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:02,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:02,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1621433966, now seen corresponding path program 2 times [2020-10-27 01:18:02,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:02,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081552337] [2020-10-27 01:18:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:02,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:05,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:05,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 01:18:05,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:18:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2740 [2020-10-27 01:18:05,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:18:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:18:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:05,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:05,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:05,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:05,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:05,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:05,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:05,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:05,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:05,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:18:05,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:05,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 01:18:05,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:18:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:18:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:05,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:05,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:05,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:18:05,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:05,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:05,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 01:18:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:05,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:05,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 01:18:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:05,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:05,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:05,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:18:05,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:18:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:05,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:18:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:05,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:05,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:05,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:05,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:05,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:18:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 01:18:05,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081552337] [2020-10-27 01:18:05,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:05,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:18:05,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501161746] [2020-10-27 01:18:05,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:18:05,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:05,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:18:05,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:18:05,522 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand 8 states. [2020-10-27 01:18:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:06,200 INFO L93 Difference]: Finished difference Result 197 states and 254 transitions. [2020-10-27 01:18:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:18:06,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-27 01:18:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:06,203 INFO L225 Difference]: With dead ends: 197 [2020-10-27 01:18:06,203 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 01:18:06,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:18:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 01:18:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 93. [2020-10-27 01:18:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 01:18:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 115 transitions. [2020-10-27 01:18:06,228 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 115 transitions. Word has length 47 [2020-10-27 01:18:06,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:06,229 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 115 transitions. [2020-10-27 01:18:06,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:18:06,230 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 115 transitions. [2020-10-27 01:18:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 01:18:06,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:06,232 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-27 01:18:06,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:18:06,232 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:06,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1378956374, now seen corresponding path program 3 times [2020-10-27 01:18:06,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:06,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193025484] [2020-10-27 01:18:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:06,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:07,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:07,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 01:18:07,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:18:07,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1079 [2020-10-27 01:18:07,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:18:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:18:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 01:18:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:07,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:07,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:07,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:07,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:07,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:07,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:07,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:07,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:07,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:07,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:07,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:18:07,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:07,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 01:18:07,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:18:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:18:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:07,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:07,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:18:07,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:18:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:18:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 01:18:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:07,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:07,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:07,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:18:07,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:18:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:07,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:18:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:07,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:07,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:07,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:07,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:07,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:07,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:07,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:07,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:18:07,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:07,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 01:18:07,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193025484] [2020-10-27 01:18:07,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:07,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:18:07,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075300271] [2020-10-27 01:18:07,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:18:07,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:07,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:18:07,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:18:07,580 INFO L87 Difference]: Start difference. First operand 93 states and 115 transitions. Second operand 12 states. [2020-10-27 01:18:08,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:08,407 INFO L93 Difference]: Finished difference Result 157 states and 201 transitions. [2020-10-27 01:18:08,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:18:08,408 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-27 01:18:08,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:08,410 INFO L225 Difference]: With dead ends: 157 [2020-10-27 01:18:08,410 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 01:18:08,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:18:08,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 01:18:08,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 83. [2020-10-27 01:18:08,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 01:18:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2020-10-27 01:18:08,426 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 47 [2020-10-27 01:18:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:08,426 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2020-10-27 01:18:08,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:18:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2020-10-27 01:18:08,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 01:18:08,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:08,428 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:08,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:18:08,428 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:08,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1227067180, now seen corresponding path program 1 times [2020-10-27 01:18:08,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:08,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076285644] [2020-10-27 01:18:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:08,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:09,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:09,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 01:18:09,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:09,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-27 01:18:09,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:18:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:18:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 01:18:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:09,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:09,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:09,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:09,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:09,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:09,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:09,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:09,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:09,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:18:09,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:18:09,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:18:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:09,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:18:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:09,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:09,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:18:09,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:18:09,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:18:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:09,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 01:18:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:09,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:09,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:09,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:18:09,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:18:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:09,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:18:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:09,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:09,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:09,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:09,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:18:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:09,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 01:18:09,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076285644] [2020-10-27 01:18:09,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:09,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:18:09,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080837303] [2020-10-27 01:18:09,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:18:09,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:09,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:18:09,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:18:09,397 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand 12 states. [2020-10-27 01:18:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:10,337 INFO L93 Difference]: Finished difference Result 155 states and 195 transitions. [2020-10-27 01:18:10,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:18:10,337 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-27 01:18:10,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:10,339 INFO L225 Difference]: With dead ends: 155 [2020-10-27 01:18:10,339 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 01:18:10,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:18:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 01:18:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 75. [2020-10-27 01:18:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 01:18:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2020-10-27 01:18:10,352 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 47 [2020-10-27 01:18:10,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:10,352 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2020-10-27 01:18:10,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:18:10,353 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2020-10-27 01:18:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 01:18:10,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:10,354 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 01:18:10,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:18:10,354 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1388694395, now seen corresponding path program 1 times [2020-10-27 01:18:10,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:10,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729287479] [2020-10-27 01:18:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:10,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:10,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:15,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:15,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 01:18:15,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:18:15,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:18:15,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:15,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:18:15,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:18:15,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:18:15,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:15,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:15,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:15,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:15,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:15,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:15,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:15,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:18:15,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:15,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:18:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:15,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:15,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:15,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:18:15,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:18:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:18:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:15,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 01:18:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:15,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:15,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:15,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:15,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:18:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:15,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 01:18:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:15,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:15,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:15,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:15,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:15,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:15,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:18:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 01:18:15,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729287479] [2020-10-27 01:18:15,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:15,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:18:15,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687858838] [2020-10-27 01:18:15,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:18:15,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:15,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:18:15,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:18:15,628 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand 12 states. [2020-10-27 01:18:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:16,283 INFO L93 Difference]: Finished difference Result 153 states and 190 transitions. [2020-10-27 01:18:16,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:18:16,284 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-27 01:18:16,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:16,285 INFO L225 Difference]: With dead ends: 153 [2020-10-27 01:18:16,286 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 01:18:16,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:18:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 01:18:16,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 87. [2020-10-27 01:18:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-27 01:18:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2020-10-27 01:18:16,312 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 48 [2020-10-27 01:18:16,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:16,313 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2020-10-27 01:18:16,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:18:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2020-10-27 01:18:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 01:18:16,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:16,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:16,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:18:16,315 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:16,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1193008507, now seen corresponding path program 1 times [2020-10-27 01:18:16,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:16,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050437854] [2020-10-27 01:18:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:16,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:21,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:21,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 01:18:21,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:18:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 01:18:21,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:18:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:18:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:18:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:21,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:21,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:21,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:21,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:21,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:21,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:21,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:21,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:18:21,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:21,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 01:18:21,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:21,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:21,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:21,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:18:21,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:21,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:18:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:21,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:21,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:18:21,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:21,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 01:18:21,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:21,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:18:21,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:21,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 01:18:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:21,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:21,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:21,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:21,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:21,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:21,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:18:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:21,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:21,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:18:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:21,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:21,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:21,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:21,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:21,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:21,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:18:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:21,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 01:18:21,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050437854] [2020-10-27 01:18:21,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:21,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 01:18:21,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836209629] [2020-10-27 01:18:21,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 01:18:21,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:21,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 01:18:21,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:18:21,583 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 13 states. [2020-10-27 01:18:22,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:22,334 INFO L93 Difference]: Finished difference Result 153 states and 189 transitions. [2020-10-27 01:18:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:18:22,335 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-27 01:18:22,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:22,336 INFO L225 Difference]: With dead ends: 153 [2020-10-27 01:18:22,336 INFO L226 Difference]: Without dead ends: 105 [2020-10-27 01:18:22,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:18:22,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-27 01:18:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2020-10-27 01:18:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 01:18:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2020-10-27 01:18:22,347 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 51 [2020-10-27 01:18:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:22,347 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2020-10-27 01:18:22,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 01:18:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2020-10-27 01:18:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 01:18:22,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:22,349 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:22,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:18:22,349 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:22,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:22,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1007055710, now seen corresponding path program 2 times [2020-10-27 01:18:22,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:22,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933468175] [2020-10-27 01:18:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 01:18:22,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 01:18:22,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:18:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 01:18:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:18:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:22,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:18:22,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:22,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:22,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:18:22,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:22,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:18:22,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:18:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:18:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:22,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:22,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:22,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:18:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:18:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:22,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:18:22,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:18:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:18:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 01:18:22,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933468175] [2020-10-27 01:18:22,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:18:22,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 01:18:22,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429283161] [2020-10-27 01:18:22,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:18:22,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:22,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:18:22,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:18:22,806 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand 12 states. [2020-10-27 01:18:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:23,379 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2020-10-27 01:18:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 01:18:23,379 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-27 01:18:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:23,381 INFO L225 Difference]: With dead ends: 98 [2020-10-27 01:18:23,381 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 01:18:23,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:18:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 01:18:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2020-10-27 01:18:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 01:18:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2020-10-27 01:18:23,392 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 52 [2020-10-27 01:18:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:23,393 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2020-10-27 01:18:23,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:18:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2020-10-27 01:18:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 01:18:23,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:23,394 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:23,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:18:23,394 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:23,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:23,395 INFO L82 PathProgramCache]: Analyzing trace with hash -536610171, now seen corresponding path program 1 times [2020-10-27 01:18:23,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:23,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317404481] [2020-10-27 01:18:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:23,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:23,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:23,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 01:18:23,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:23,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-27 01:18:23,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:18:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 01:18:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 01:18:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:23,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:23,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:23,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:23,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:23,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:23,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:23,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:23,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:23,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:23,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:23,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:23,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:23,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:23,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:23,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:23,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:23,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:23,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:23,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:18:23,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:23,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 01:18:23,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:23,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:18:23,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:24,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:18:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:24,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:24,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:24,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:24,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:18:24,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:24,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:18:24,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:24,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:18:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:24,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:24,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:24,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:18:24,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:24,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:18:24,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:24,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:24,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:24,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:18:24,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 01:18:24,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317404481] [2020-10-27 01:18:24,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:24,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:18:24,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64120485] [2020-10-27 01:18:24,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:18:24,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:24,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:18:24,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:18:24,136 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 14 states. [2020-10-27 01:18:24,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:24,899 INFO L93 Difference]: Finished difference Result 104 states and 124 transitions. [2020-10-27 01:18:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:18:24,901 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-27 01:18:24,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:24,902 INFO L225 Difference]: With dead ends: 104 [2020-10-27 01:18:24,902 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 01:18:24,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:18:24,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 01:18:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 87. [2020-10-27 01:18:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-27 01:18:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2020-10-27 01:18:24,913 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 53 [2020-10-27 01:18:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:24,913 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2020-10-27 01:18:24,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:18:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2020-10-27 01:18:24,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 01:18:24,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:24,914 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:24,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:18:24,915 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:24,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:24,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1162299650, now seen corresponding path program 2 times [2020-10-27 01:18:24,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:24,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520792737] [2020-10-27 01:18:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:24,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:25,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:28,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:28,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 01:18:28,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:18:28,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4027 [2020-10-27 01:18:28,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:28,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:18:28,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:18:28,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 01:18:28,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:29,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:29,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:29,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:29,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:29,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:29,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:29,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:29,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:29,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:18:29,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:18:29,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:29,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:29,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:29,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:29,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:18:29,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:29,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 01:18:29,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:18:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:18:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:29,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:18:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:29,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:29,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:29,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:29,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:29,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:18:29,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:18:29,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:29,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:18:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:29,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:29,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:29,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:18:29,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:18:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:18:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 01:18:29,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520792737] [2020-10-27 01:18:29,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:29,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 01:18:29,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892878172] [2020-10-27 01:18:29,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 01:18:29,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:29,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 01:18:29,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:18:29,520 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand 21 states. [2020-10-27 01:18:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:31,366 INFO L93 Difference]: Finished difference Result 165 states and 218 transitions. [2020-10-27 01:18:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 01:18:31,366 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 54 [2020-10-27 01:18:31,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:31,368 INFO L225 Difference]: With dead ends: 165 [2020-10-27 01:18:31,368 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 01:18:31,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 01:18:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 01:18:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 131. [2020-10-27 01:18:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 01:18:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 166 transitions. [2020-10-27 01:18:31,394 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 166 transitions. Word has length 54 [2020-10-27 01:18:31,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:31,394 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 166 transitions. [2020-10-27 01:18:31,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 01:18:31,394 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 166 transitions. [2020-10-27 01:18:31,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 01:18:31,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:31,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:31,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:18:31,396 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:31,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2006070747, now seen corresponding path program 3 times [2020-10-27 01:18:31,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:31,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320263030] [2020-10-27 01:18:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 01:18:32,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:32,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-27 01:18:32,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:18:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 01:18:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 01:18:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:32,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:32,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:32,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:32,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:32,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:32,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:32,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:32,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:32,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:32,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:32,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:32,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:32,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:32,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:18:32,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 01:18:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:18:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:18:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:32,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:32,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:18:32,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:18:32,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:32,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:18:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:32,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:18:32,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:32,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:18:32,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:18:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:18:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 01:18:33,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320263030] [2020-10-27 01:18:33,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:33,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 01:18:33,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145822455] [2020-10-27 01:18:33,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 01:18:33,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:33,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 01:18:33,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:18:33,035 INFO L87 Difference]: Start difference. First operand 131 states and 166 transitions. Second operand 16 states. [2020-10-27 01:18:34,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:34,535 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2020-10-27 01:18:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:18:34,536 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-10-27 01:18:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:34,538 INFO L225 Difference]: With dead ends: 174 [2020-10-27 01:18:34,538 INFO L226 Difference]: Without dead ends: 168 [2020-10-27 01:18:34,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:18:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-27 01:18:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2020-10-27 01:18:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-27 01:18:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2020-10-27 01:18:34,559 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 55 [2020-10-27 01:18:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:34,559 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2020-10-27 01:18:34,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 01:18:34,559 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2020-10-27 01:18:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 01:18:34,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:34,561 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:34,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:18:34,561 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:34,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:34,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1441305246, now seen corresponding path program 4 times [2020-10-27 01:18:34,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:34,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357765703] [2020-10-27 01:18:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:35,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:35,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 01:18:35,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:35,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-10-27 01:18:35,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:18:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 01:18:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 01:18:35,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:35,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:35,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:35,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:35,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:35,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:35,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:18:35,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:35,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:35,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:35,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:35,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:35,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:18:35,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:35,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:35,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:35,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:18:35,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:35,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 01:18:35,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:35,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:35,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:35,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:18:35,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:36,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:18:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:36,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:36,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:36,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:18:36,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:18:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:36,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:18:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:36,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:36,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:18:36,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:36,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:18:36,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:18:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:18:36,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 01:18:36,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357765703] [2020-10-27 01:18:36,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:36,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 01:18:36,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491953541] [2020-10-27 01:18:36,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 01:18:36,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:36,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 01:18:36,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:18:36,378 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand 17 states. [2020-10-27 01:18:37,713 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-27 01:18:38,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:38,178 INFO L93 Difference]: Finished difference Result 178 states and 239 transitions. [2020-10-27 01:18:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:18:38,180 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-27 01:18:38,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:38,182 INFO L225 Difference]: With dead ends: 178 [2020-10-27 01:18:38,182 INFO L226 Difference]: Without dead ends: 172 [2020-10-27 01:18:38,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:18:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-27 01:18:38,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 153. [2020-10-27 01:18:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-27 01:18:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 201 transitions. [2020-10-27 01:18:38,202 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 201 transitions. Word has length 56 [2020-10-27 01:18:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:38,202 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 201 transitions. [2020-10-27 01:18:38,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 01:18:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 201 transitions. [2020-10-27 01:18:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 01:18:38,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:38,204 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:38,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 01:18:38,204 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:38,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:38,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1113443899, now seen corresponding path program 5 times [2020-10-27 01:18:38,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:38,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418753056] [2020-10-27 01:18:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:39,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:39,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:18:39,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-10-27 01:18:39,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:18:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 01:18:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 01:18:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:39,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:39,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:39,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:39,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:39,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:39,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:39,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:39,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:39,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:39,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:39,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:18:39,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:39,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:39,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:39,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:39,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:18:39,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 01:18:39,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:18:39,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:39,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:18:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:39,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:39,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:39,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:39,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:18:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:18:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:18:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:39,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:39,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:39,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:18:39,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:39,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:18:39,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:18:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:18:39,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 01:18:39,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418753056] [2020-10-27 01:18:39,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:39,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:18:39,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760109105] [2020-10-27 01:18:39,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:18:39,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:39,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:18:39,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:18:39,980 INFO L87 Difference]: Start difference. First operand 153 states and 201 transitions. Second operand 18 states. [2020-10-27 01:18:42,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:42,072 INFO L93 Difference]: Finished difference Result 182 states and 247 transitions. [2020-10-27 01:18:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 01:18:42,073 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-10-27 01:18:42,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:42,076 INFO L225 Difference]: With dead ends: 182 [2020-10-27 01:18:42,077 INFO L226 Difference]: Without dead ends: 176 [2020-10-27 01:18:42,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:18:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-27 01:18:42,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 154. [2020-10-27 01:18:42,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 01:18:42,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 203 transitions. [2020-10-27 01:18:42,102 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 203 transitions. Word has length 57 [2020-10-27 01:18:42,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:42,102 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 203 transitions. [2020-10-27 01:18:42,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:18:42,102 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 203 transitions. [2020-10-27 01:18:42,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 01:18:42,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:42,104 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:42,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 01:18:42,104 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:42,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1360320102, now seen corresponding path program 1 times [2020-10-27 01:18:42,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:42,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643988026] [2020-10-27 01:18:42,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:42,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:42,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:44,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:44,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:18:44,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:18:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2865 [2020-10-27 01:18:44,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:18:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:18:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 01:18:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:45,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:45,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:45,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:45,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:45,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:45,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:45,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:45,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:18:45,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:18:45,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:45,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:45,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:18:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 01:18:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:18:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:45,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:18:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:45,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:45,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:18:45,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:18:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 01:18:45,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:18:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:18:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 01:18:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:45,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:45,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:45,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:18:45,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:45,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:18:45,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:45,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 01:18:45,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643988026] [2020-10-27 01:18:45,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:45,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:18:45,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169733212] [2020-10-27 01:18:45,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:18:45,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:45,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:18:45,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:18:45,465 INFO L87 Difference]: Start difference. First operand 154 states and 203 transitions. Second operand 18 states. [2020-10-27 01:18:46,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:46,985 INFO L93 Difference]: Finished difference Result 213 states and 283 transitions. [2020-10-27 01:18:46,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:18:46,988 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-10-27 01:18:46,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:46,993 INFO L225 Difference]: With dead ends: 213 [2020-10-27 01:18:46,993 INFO L226 Difference]: Without dead ends: 183 [2020-10-27 01:18:46,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 01:18:46,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-27 01:18:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 162. [2020-10-27 01:18:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-27 01:18:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 217 transitions. [2020-10-27 01:18:47,022 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 217 transitions. Word has length 57 [2020-10-27 01:18:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:47,022 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 217 transitions. [2020-10-27 01:18:47,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:18:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 217 transitions. [2020-10-27 01:18:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 01:18:47,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:47,024 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 01:18:47,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 01:18:47,025 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:47,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1783021928, now seen corresponding path program 1 times [2020-10-27 01:18:47,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:47,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723078305] [2020-10-27 01:18:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:47,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:51,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:51,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:18:51,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:18:51,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4884 [2020-10-27 01:18:51,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:18:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:18:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 01:18:51,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:51,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:51,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:51,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:51,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:51,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:51,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:51,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:51,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:18:51,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:18:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:52,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:52,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:52,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:18:52,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 01:18:52,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:18:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:52,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:18:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:52,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:52,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:18:52,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:18:52,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:52,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:18:52,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:52,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 01:18:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:52,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:52,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:52,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:52,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:18:52,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:18:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 01:18:52,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723078305] [2020-10-27 01:18:52,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:52,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:18:52,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664681521] [2020-10-27 01:18:52,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:18:52,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:52,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:18:52,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:18:52,298 INFO L87 Difference]: Start difference. First operand 162 states and 217 transitions. Second operand 12 states. [2020-10-27 01:18:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:53,331 INFO L93 Difference]: Finished difference Result 274 states and 390 transitions. [2020-10-27 01:18:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:18:53,332 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-27 01:18:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:53,334 INFO L225 Difference]: With dead ends: 274 [2020-10-27 01:18:53,334 INFO L226 Difference]: Without dead ends: 197 [2020-10-27 01:18:53,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:18:53,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-27 01:18:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 170. [2020-10-27 01:18:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-27 01:18:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 231 transitions. [2020-10-27 01:18:53,356 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 231 transitions. Word has length 57 [2020-10-27 01:18:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:53,356 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 231 transitions. [2020-10-27 01:18:53,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:18:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 231 transitions. [2020-10-27 01:18:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 01:18:53,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:53,358 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:53,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 01:18:53,358 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:53,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:53,359 INFO L82 PathProgramCache]: Analyzing trace with hash 460323266, now seen corresponding path program 6 times [2020-10-27 01:18:53,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:53,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024537846] [2020-10-27 01:18:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:53,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:53,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 01:18:53,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-27 01:18:53,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:18:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 01:18:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 01:18:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:53,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:53,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:53,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:53,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:53,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:53,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:53,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:53,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:53,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:53,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:53,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:53,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:54,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:54,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:54,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:18:54,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 01:18:54,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:18:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:18:54,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:54,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:18:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:54,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:54,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:54,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:18:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:18:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:54,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:18:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:54,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:54,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 01:18:54,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:18:54,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:18:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 01:18:54,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024537846] [2020-10-27 01:18:54,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:54,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 01:18:54,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120238517] [2020-10-27 01:18:54,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 01:18:54,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:54,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 01:18:54,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:18:54,412 INFO L87 Difference]: Start difference. First operand 170 states and 231 transitions. Second operand 17 states. [2020-10-27 01:18:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:55,654 INFO L93 Difference]: Finished difference Result 194 states and 267 transitions. [2020-10-27 01:18:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:18:55,654 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-27 01:18:55,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:55,656 INFO L225 Difference]: With dead ends: 194 [2020-10-27 01:18:55,656 INFO L226 Difference]: Without dead ends: 186 [2020-10-27 01:18:55,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-27 01:18:55,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-27 01:18:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 162. [2020-10-27 01:18:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-27 01:18:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2020-10-27 01:18:55,684 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 58 [2020-10-27 01:18:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:55,684 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2020-10-27 01:18:55,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 01:18:55,685 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2020-10-27 01:18:55,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 01:18:55,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:55,687 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-27 01:18:55,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 01:18:55,688 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:55,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:55,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2113715998, now seen corresponding path program 7 times [2020-10-27 01:18:55,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:55,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524838742] [2020-10-27 01:18:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:55,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:56,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:56,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 01:18:56,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:56,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-10-27 01:18:56,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:18:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:18:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 01:18:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:56,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:56,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:56,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:56,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:56,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:56,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:56,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:56,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:18:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:56,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:56,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:56,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:18:56,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:18:56,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:18:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:56,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:56,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:18:56,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 01:18:56,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:18:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:18:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:57,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 01:18:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:57,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:57,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:57,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:18:57,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:57,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:18:57,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:18:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:57,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:57,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 01:18:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:57,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:57,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:57,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:18:57,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:57,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:18:57,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 01:18:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 01:18:57,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524838742] [2020-10-27 01:18:57,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:57,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 01:18:57,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720004838] [2020-10-27 01:18:57,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 01:18:57,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:57,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 01:18:57,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:18:57,112 INFO L87 Difference]: Start difference. First operand 162 states and 214 transitions. Second operand 13 states. [2020-10-27 01:18:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:57,812 INFO L93 Difference]: Finished difference Result 263 states and 363 transitions. [2020-10-27 01:18:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:18:57,817 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-27 01:18:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:57,819 INFO L225 Difference]: With dead ends: 263 [2020-10-27 01:18:57,819 INFO L226 Difference]: Without dead ends: 174 [2020-10-27 01:18:57,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:18:57,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-27 01:18:57,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 149. [2020-10-27 01:18:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-27 01:18:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2020-10-27 01:18:57,838 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 59 [2020-10-27 01:18:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:57,838 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2020-10-27 01:18:57,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 01:18:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2020-10-27 01:18:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 01:18:57,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:57,840 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:57,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 01:18:57,840 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:57,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1276603544, now seen corresponding path program 2 times [2020-10-27 01:18:57,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:57,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084752233] [2020-10-27 01:18:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:57,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:00,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:00,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 01:19:00,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:19:00,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3060 [2020-10-27 01:19:00,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:19:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:19:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:19:00,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:00,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:00,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:00,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:00,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:00,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:00,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:00,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:00,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:00,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:00,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:00,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:00,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:01,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:01,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:01,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:01,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:19:01,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:19:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:19:01,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:01,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:19:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:01,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:01,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:01,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:19:01,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 01:19:01,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:19:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:19:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:19:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:01,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:19:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:01,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:01,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:01,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:19:01,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:19:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:01,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 01:19:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:01,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:01,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:01,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:19:01,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:19:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:01,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 01:19:01,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084752233] [2020-10-27 01:19:01,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:01,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:19:01,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216335693] [2020-10-27 01:19:01,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:19:01,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:01,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:19:01,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:19:01,219 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand 14 states. [2020-10-27 01:19:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:01,982 INFO L93 Difference]: Finished difference Result 243 states and 327 transitions. [2020-10-27 01:19:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 01:19:01,982 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-27 01:19:01,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:01,984 INFO L225 Difference]: With dead ends: 243 [2020-10-27 01:19:01,984 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 01:19:01,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:19:01,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 01:19:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2020-10-27 01:19:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-27 01:19:02,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 182 transitions. [2020-10-27 01:19:02,001 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 182 transitions. Word has length 60 [2020-10-27 01:19:02,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:02,001 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 182 transitions. [2020-10-27 01:19:02,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:19:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 182 transitions. [2020-10-27 01:19:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 01:19:02,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:02,002 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-27 01:19:02,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 01:19:02,003 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:02,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:02,003 INFO L82 PathProgramCache]: Analyzing trace with hash 2069947113, now seen corresponding path program 3 times [2020-10-27 01:19:02,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:02,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949322789] [2020-10-27 01:19:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:02,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:02,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:02,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 01:19:02,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:02,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-27 01:19:02,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:19:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 01:19:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 01:19:02,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:02,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:02,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:02,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:02,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:02,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:02,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:02,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:02,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:02,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:02,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:02,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:02,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:02,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:02,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:02,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:02,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:02,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:02,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:02,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:02,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:02,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:19:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:02,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:02,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:19:02,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:02,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 01:19:02,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:19:02,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:02,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 01:19:02,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 01:19:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:02,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:02,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:02,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:02,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:19:02,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:19:02,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:02,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:19:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:02,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:02,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:02,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:19:02,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:19:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:19:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:19:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 01:19:03,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949322789] [2020-10-27 01:19:03,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:03,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 01:19:03,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795331509] [2020-10-27 01:19:03,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 01:19:03,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:03,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 01:19:03,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:19:03,020 INFO L87 Difference]: Start difference. First operand 143 states and 182 transitions. Second operand 16 states. [2020-10-27 01:19:04,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:04,373 INFO L93 Difference]: Finished difference Result 162 states and 207 transitions. [2020-10-27 01:19:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 01:19:04,374 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 61 [2020-10-27 01:19:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:04,376 INFO L225 Difference]: With dead ends: 162 [2020-10-27 01:19:04,376 INFO L226 Difference]: Without dead ends: 156 [2020-10-27 01:19:04,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2020-10-27 01:19:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-27 01:19:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-10-27 01:19:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-27 01:19:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 181 transitions. [2020-10-27 01:19:04,392 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 181 transitions. Word has length 61 [2020-10-27 01:19:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:04,392 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 181 transitions. [2020-10-27 01:19:04,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 01:19:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 181 transitions. [2020-10-27 01:19:04,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 01:19:04,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:04,393 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 01:19:04,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 01:19:04,394 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:04,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:04,394 INFO L82 PathProgramCache]: Analyzing trace with hash 361196830, now seen corresponding path program 4 times [2020-10-27 01:19:04,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:04,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937464482] [2020-10-27 01:19:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:06,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:06,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 01:19:06,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2120 [2020-10-27 01:19:06,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:19:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:19:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:19:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:06,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:06,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:06,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:06,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:19:06,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:06,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:06,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:06,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:06,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:19:06,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:19:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:19:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:06,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:19:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:06,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:06,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:06,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:19:06,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:06,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 01:19:06,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:19:06,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:06,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 01:19:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:06,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:06,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:06,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:06,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:19:06,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:19:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:19:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:19:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:06,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:06,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:06,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:19:06,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:19:06,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:19:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:19:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 01:19:06,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937464482] [2020-10-27 01:19:06,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:06,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:19:06,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173234083] [2020-10-27 01:19:06,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:19:06,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:06,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:19:06,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:19:06,990 INFO L87 Difference]: Start difference. First operand 143 states and 181 transitions. Second operand 18 states. [2020-10-27 01:19:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:08,519 INFO L93 Difference]: Finished difference Result 208 states and 300 transitions. [2020-10-27 01:19:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:19:08,522 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2020-10-27 01:19:08,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:08,524 INFO L225 Difference]: With dead ends: 208 [2020-10-27 01:19:08,524 INFO L226 Difference]: Without dead ends: 202 [2020-10-27 01:19:08,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:19:08,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-27 01:19:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 166. [2020-10-27 01:19:08,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-27 01:19:08,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2020-10-27 01:19:08,550 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 62 [2020-10-27 01:19:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:08,550 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2020-10-27 01:19:08,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:19:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2020-10-27 01:19:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 01:19:08,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:08,551 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-10-27 01:19:08,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 01:19:08,552 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:08,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:08,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1070454391, now seen corresponding path program 5 times [2020-10-27 01:19:08,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:08,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815533234] [2020-10-27 01:19:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:08,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:09,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:09,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 01:19:09,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:09,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-10-27 01:19:09,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:19:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 01:19:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 01:19:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:09,994 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 29 [2020-10-27 01:19:10,332 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 32 [2020-10-27 01:19:10,661 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 28 [2020-10-27 01:19:10,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:10,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:10,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:10,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:10,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:10,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:10,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:10,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:10,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:10,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:10,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:19:10,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:10,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:19:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:10,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:10,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:10,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:19:10,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 01:19:10,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:19:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 01:19:10,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:11,132 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-27 01:19:11,355 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-27 01:19:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 01:19:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:11,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:11,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:11,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:11,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:19:11,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:11,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:11,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:11,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:19:11,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:19:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:11,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:11,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:19:11,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:11,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:19:11,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:11,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:19:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:19:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:19:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 01:19:11,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815533234] [2020-10-27 01:19:11,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:11,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:19:11,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045031944] [2020-10-27 01:19:11,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:19:11,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:11,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:19:11,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:19:11,888 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand 18 states. [2020-10-27 01:19:12,532 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-27 01:19:13,602 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-27 01:19:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:14,072 INFO L93 Difference]: Finished difference Result 211 states and 305 transitions. [2020-10-27 01:19:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 01:19:14,073 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-10-27 01:19:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:14,075 INFO L225 Difference]: With dead ends: 211 [2020-10-27 01:19:14,075 INFO L226 Difference]: Without dead ends: 205 [2020-10-27 01:19:14,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-27 01:19:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-27 01:19:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2020-10-27 01:19:14,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-27 01:19:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 268 transitions. [2020-10-27 01:19:14,097 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 268 transitions. Word has length 63 [2020-10-27 01:19:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:14,098 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 268 transitions. [2020-10-27 01:19:14,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:19:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 268 transitions. [2020-10-27 01:19:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 01:19:14,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:14,101 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 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] [2020-10-27 01:19:14,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 01:19:14,101 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1792998014, now seen corresponding path program 6 times [2020-10-27 01:19:14,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:14,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46763025] [2020-10-27 01:19:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:15,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:15,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 01:19:15,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:15,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-10-27 01:19:15,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:19:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 01:19:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 01:19:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:15,362 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-27 01:19:15,551 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-27 01:19:15,767 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-27 01:19:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:15,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:15,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:15,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:15,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:15,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:15,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:15,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:15,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:15,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:15,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:19:15,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:15,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:15,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:19:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:15,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:15,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:19:15,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 01:19:15,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:19:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 01:19:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:16,160 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2020-10-27 01:19:16,313 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-27 01:19:16,564 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-27 01:19:16,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 01:19:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:16,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:16,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:16,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:16,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:19:16,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:19:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:16,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:19:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:16,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:16,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:16,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:16,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:16,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:19:16,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:19:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:19:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:19:16,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:16,920 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-27 01:19:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 01:19:17,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46763025] [2020-10-27 01:19:17,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:17,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:19:17,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408074969] [2020-10-27 01:19:17,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:19:17,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:17,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:19:17,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:19:17,322 INFO L87 Difference]: Start difference. First operand 189 states and 268 transitions. Second operand 19 states. [2020-10-27 01:19:19,438 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-10-27 01:19:19,824 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 01:19:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:20,007 INFO L93 Difference]: Finished difference Result 215 states and 314 transitions. [2020-10-27 01:19:20,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 01:19:20,008 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-27 01:19:20,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:20,010 INFO L225 Difference]: With dead ends: 215 [2020-10-27 01:19:20,010 INFO L226 Difference]: Without dead ends: 209 [2020-10-27 01:19:20,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:19:20,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-27 01:19:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 190. [2020-10-27 01:19:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-27 01:19:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 270 transitions. [2020-10-27 01:19:20,034 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 270 transitions. Word has length 64 [2020-10-27 01:19:20,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:20,035 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 270 transitions. [2020-10-27 01:19:20,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:19:20,035 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 270 transitions. [2020-10-27 01:19:20,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 01:19:20,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:20,037 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 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] [2020-10-27 01:19:20,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 01:19:20,037 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:20,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:20,038 INFO L82 PathProgramCache]: Analyzing trace with hash 365709353, now seen corresponding path program 7 times [2020-10-27 01:19:20,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:20,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727741622] [2020-10-27 01:19:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:21,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:21,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 01:19:21,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:21,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1534 [2020-10-27 01:19:21,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 01:19:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 01:19:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 01:19:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:21,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:21,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:21,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:21,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:21,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:19:21,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:21,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:21,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:21,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:21,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:19:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:19:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:21,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:21,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:21,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:19:21,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 01:19:21,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:19:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 01:19:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:22,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 01:19:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:22,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:22,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:22,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:19:22,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:19:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:19:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:22,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:22,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 01:19:22,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:19:22,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:19:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:19:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:19:22,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 01:19:22,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727741622] [2020-10-27 01:19:22,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:22,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 01:19:22,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284789785] [2020-10-27 01:19:22,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:19:22,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:22,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:19:22,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:19:22,337 INFO L87 Difference]: Start difference. First operand 190 states and 270 transitions. Second operand 20 states. [2020-10-27 01:19:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:24,077 INFO L93 Difference]: Finished difference Result 212 states and 305 transitions. [2020-10-27 01:19:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 01:19:24,078 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-27 01:19:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:24,081 INFO L225 Difference]: With dead ends: 212 [2020-10-27 01:19:24,081 INFO L226 Difference]: Without dead ends: 204 [2020-10-27 01:19:24,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:19:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-27 01:19:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 183. [2020-10-27 01:19:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-27 01:19:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 254 transitions. [2020-10-27 01:19:24,105 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 254 transitions. Word has length 65 [2020-10-27 01:19:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:24,105 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 254 transitions. [2020-10-27 01:19:24,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:19:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 254 transitions. [2020-10-27 01:19:24,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 01:19:24,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:24,107 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:24,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 01:19:24,108 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:24,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:24,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1083626934, now seen corresponding path program 8 times [2020-10-27 01:19:24,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:24,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390081177] [2020-10-27 01:19:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:24,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:24,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 01:19:24,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 01:19:24,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:19:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 01:19:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:19:24,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:24,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:24,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:24,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:24,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:24,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:24,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:24,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:24,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:24,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:24,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:24,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:19:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:24,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:24,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:19:24,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:24,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:19:24,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:24,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:24,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 01:19:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:24,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:24,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:24,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:24,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:24,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:19:24,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:19:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:19:24,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:24,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 01:19:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:24,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:24,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:19:24,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:24,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:19:24,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:24,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:24,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 01:19:24,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:24,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 01:19:24,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390081177] [2020-10-27 01:19:24,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:24,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:19:24,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705903980] [2020-10-27 01:19:24,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:19:24,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:24,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:19:24,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:19:24,438 INFO L87 Difference]: Start difference. First operand 183 states and 254 transitions. Second operand 9 states. [2020-10-27 01:19:24,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:24,975 INFO L93 Difference]: Finished difference Result 219 states and 298 transitions. [2020-10-27 01:19:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:19:24,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-27 01:19:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:24,978 INFO L225 Difference]: With dead ends: 219 [2020-10-27 01:19:24,978 INFO L226 Difference]: Without dead ends: 191 [2020-10-27 01:19:24,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:19:24,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-27 01:19:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 177. [2020-10-27 01:19:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-27 01:19:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 240 transitions. [2020-10-27 01:19:25,001 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 240 transitions. Word has length 65 [2020-10-27 01:19:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:25,001 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 240 transitions. [2020-10-27 01:19:25,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:19:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 240 transitions. [2020-10-27 01:19:25,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 01:19:25,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:25,003 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-10-27 01:19:25,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 01:19:25,003 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:25,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:25,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1343472992, now seen corresponding path program 2 times [2020-10-27 01:19:25,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:25,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67940958] [2020-10-27 01:19:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:25,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:25,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:25,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:25,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:28,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:28,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 01:19:28,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:19:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3892 [2020-10-27 01:19:28,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:19:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:19:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:19:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:28,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:28,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:28,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:28,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:28,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:28,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:28,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:19:28,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:19:28,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:19:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:19:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:19:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:19:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:29,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:29,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:29,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:19:29,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:29,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:19:29,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:29,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 01:19:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:29,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:29,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:19:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:29,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:29,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:29,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:29,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:29,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:19:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:29,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 01:19:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:29,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:29,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:19:29,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:29,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 01:19:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-27 01:19:29,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67940958] [2020-10-27 01:19:29,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:29,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:19:29,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919058998] [2020-10-27 01:19:29,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:19:29,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:29,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:19:29,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:19:29,083 INFO L87 Difference]: Start difference. First operand 177 states and 240 transitions. Second operand 9 states. [2020-10-27 01:19:29,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:29,826 INFO L93 Difference]: Finished difference Result 340 states and 478 transitions. [2020-10-27 01:19:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:19:29,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-27 01:19:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:29,829 INFO L225 Difference]: With dead ends: 340 [2020-10-27 01:19:29,829 INFO L226 Difference]: Without dead ends: 221 [2020-10-27 01:19:29,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:19:29,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-27 01:19:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 179. [2020-10-27 01:19:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-27 01:19:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 242 transitions. [2020-10-27 01:19:29,859 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 242 transitions. Word has length 65 [2020-10-27 01:19:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:29,859 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 242 transitions. [2020-10-27 01:19:29,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:19:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 242 transitions. [2020-10-27 01:19:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 01:19:29,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:29,861 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:29,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 01:19:29,861 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:29,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:29,861 INFO L82 PathProgramCache]: Analyzing trace with hash 685113118, now seen corresponding path program 9 times [2020-10-27 01:19:29,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:29,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831279005] [2020-10-27 01:19:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:30,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:31,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:31,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 01:19:31,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-27 01:19:31,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:19:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:19:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:19:31,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:31,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:31,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:31,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:31,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:19:31,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:31,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:31,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:31,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:19:31,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:31,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:19:31,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:19:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:19:31,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:31,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:19:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:31,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:31,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:19:31,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 01:19:31,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:19:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:19:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:19:31,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:31,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:19:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:31,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:31,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:31,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:31,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:31,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:31,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:19:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:31,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:31,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 01:19:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:31,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:31,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:31,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:19:31,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:31,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 01:19:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 01:19:31,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831279005] [2020-10-27 01:19:31,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:31,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 01:19:31,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353899072] [2020-10-27 01:19:31,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 01:19:31,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:31,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 01:19:31,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:19:31,647 INFO L87 Difference]: Start difference. First operand 179 states and 242 transitions. Second operand 16 states. [2020-10-27 01:19:33,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:33,036 INFO L93 Difference]: Finished difference Result 272 states and 376 transitions. [2020-10-27 01:19:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 01:19:33,037 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-10-27 01:19:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:33,040 INFO L225 Difference]: With dead ends: 272 [2020-10-27 01:19:33,040 INFO L226 Difference]: Without dead ends: 199 [2020-10-27 01:19:33,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:19:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-27 01:19:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 173. [2020-10-27 01:19:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-27 01:19:33,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 230 transitions. [2020-10-27 01:19:33,061 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 230 transitions. Word has length 65 [2020-10-27 01:19:33,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:33,062 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 230 transitions. [2020-10-27 01:19:33,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 01:19:33,062 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 230 transitions. [2020-10-27 01:19:33,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 01:19:33,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:33,063 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 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] [2020-10-27 01:19:33,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 01:19:33,064 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:33,064 INFO L82 PathProgramCache]: Analyzing trace with hash 988375088, now seen corresponding path program 10 times [2020-10-27 01:19:33,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:33,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224737533] [2020-10-27 01:19:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:33,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:34,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:35,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:35,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 01:19:35,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:19:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2205 [2020-10-27 01:19:35,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:19:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:19:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 01:19:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:35,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:35,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:35,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:35,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:35,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:35,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:19:35,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:35,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:35,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:35,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:19:35,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:35,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:19:35,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:19:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:19:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:19:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:35,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:35,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:19:35,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 01:19:35,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:19:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:19:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 01:19:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:19:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:35,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:35,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:35,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:35,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:35,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:35,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:19:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:35,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:35,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 01:19:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:35,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:35,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:35,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:19:35,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:19:35,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:19:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 01:19:35,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224737533] [2020-10-27 01:19:35,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:35,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 01:19:35,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235380405] [2020-10-27 01:19:35,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 01:19:35,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:35,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 01:19:35,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:19:35,579 INFO L87 Difference]: Start difference. First operand 173 states and 230 transitions. Second operand 15 states. [2020-10-27 01:19:36,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:36,456 INFO L93 Difference]: Finished difference Result 273 states and 379 transitions. [2020-10-27 01:19:36,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:19:36,457 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-27 01:19:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:36,459 INFO L225 Difference]: With dead ends: 273 [2020-10-27 01:19:36,460 INFO L226 Difference]: Without dead ends: 193 [2020-10-27 01:19:36,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2020-10-27 01:19:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-27 01:19:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 167. [2020-10-27 01:19:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-27 01:19:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 218 transitions. [2020-10-27 01:19:36,484 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 218 transitions. Word has length 67 [2020-10-27 01:19:36,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:36,484 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 218 transitions. [2020-10-27 01:19:36,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 01:19:36,484 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 218 transitions. [2020-10-27 01:19:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 01:19:36,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:36,485 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:36,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 01:19:36,486 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:36,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1797271657, now seen corresponding path program 11 times [2020-10-27 01:19:36,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:36,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304568594] [2020-10-27 01:19:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:36,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:36,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:37,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:37,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 01:19:37,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-27 01:19:37,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:19:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 01:19:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 01:19:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:37,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:37,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:37,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:37,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:19:37,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:37,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:37,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:37,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:19:37,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:19:37,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:19:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:37,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:37,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:37,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:19:37,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:37,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 01:19:37,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:19:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:19:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:37,965 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-10-27 01:19:38,108 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-10-27 01:19:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 01:19:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:38,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:38,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:38,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:19:38,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:19:38,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:38,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 01:19:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:38,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:38,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:19:38,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:19:38,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:19:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:19:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:19:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 01:19:38,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304568594] [2020-10-27 01:19:38,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:38,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:19:38,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396173727] [2020-10-27 01:19:38,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:19:38,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:38,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:19:38,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:19:38,700 INFO L87 Difference]: Start difference. First operand 167 states and 218 transitions. Second operand 18 states. [2020-10-27 01:19:39,553 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-10-27 01:19:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:40,750 INFO L93 Difference]: Finished difference Result 186 states and 243 transitions. [2020-10-27 01:19:40,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:19:40,751 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-10-27 01:19:40,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:40,753 INFO L225 Difference]: With dead ends: 186 [2020-10-27 01:19:40,754 INFO L226 Difference]: Without dead ends: 180 [2020-10-27 01:19:40,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:19:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-27 01:19:40,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2020-10-27 01:19:40,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-27 01:19:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 217 transitions. [2020-10-27 01:19:40,774 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 217 transitions. Word has length 69 [2020-10-27 01:19:40,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:40,775 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 217 transitions. [2020-10-27 01:19:40,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:19:40,775 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 217 transitions. [2020-10-27 01:19:40,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 01:19:40,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:40,776 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:40,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 01:19:40,776 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:40,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:40,777 INFO L82 PathProgramCache]: Analyzing trace with hash 736499248, now seen corresponding path program 12 times [2020-10-27 01:19:40,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:40,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293265691] [2020-10-27 01:19:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:40,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:45,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:45,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 01:19:45,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:19:45,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 01:19:45,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:45,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:19:45,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:19:45,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 01:19:45,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:45,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:45,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:45,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:45,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:45,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:45,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:45,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:19:45,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:19:45,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:19:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:19:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:19:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:46,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:46,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:46,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:46,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:19:46,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 01:19:46,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:19:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:19:46,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:46,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 01:19:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:46,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:46,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:46,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:19:46,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:19:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:19:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:46,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 01:19:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:46,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:46,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:19:46,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:46,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:19:46,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:19:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:19:46,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 01:19:46,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293265691] [2020-10-27 01:19:46,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:46,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 01:19:46,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374155735] [2020-10-27 01:19:46,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 01:19:46,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:46,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 01:19:46,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-27 01:19:46,701 INFO L87 Difference]: Start difference. First operand 167 states and 217 transitions. Second operand 28 states. [2020-10-27 01:19:50,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:50,536 INFO L93 Difference]: Finished difference Result 276 states and 400 transitions. [2020-10-27 01:19:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 01:19:50,537 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 70 [2020-10-27 01:19:50,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:50,540 INFO L225 Difference]: With dead ends: 276 [2020-10-27 01:19:50,540 INFO L226 Difference]: Without dead ends: 264 [2020-10-27 01:19:50,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=241, Invalid=2839, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 01:19:50,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-27 01:19:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 216. [2020-10-27 01:19:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-27 01:19:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 289 transitions. [2020-10-27 01:19:50,570 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 289 transitions. Word has length 70 [2020-10-27 01:19:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:50,571 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 289 transitions. [2020-10-27 01:19:50,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 01:19:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 289 transitions. [2020-10-27 01:19:50,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 01:19:50,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:50,572 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-27 01:19:50,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 01:19:50,573 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:50,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:50,573 INFO L82 PathProgramCache]: Analyzing trace with hash -903565310, now seen corresponding path program 1 times [2020-10-27 01:19:50,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:50,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092534035] [2020-10-27 01:19:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:50,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:50,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:50,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:53,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:53,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:53,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:55,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 01:19:55,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 01:19:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 01:19:55,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:19:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:19:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 01:19:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:55,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:55,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:55,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:55,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:55,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:55,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:55,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:55,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:19:55,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:19:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:19:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:55,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:19:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:55,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:19:55,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:55,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 01:19:55,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:19:55,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:55,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:19:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:55,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:55,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:55,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:19:55,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:19:55,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:55,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:19:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:55,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:55,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:55,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:19:55,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:19:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:19:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:19:55,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 01:19:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:55,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:19:55,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:55,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:19:55,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:55,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 01:19:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:19:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:55,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 01:19:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:55,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:55,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:55,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:19:55,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:55,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:55,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:55,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:19:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:55,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 01:19:55,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092534035] [2020-10-27 01:19:55,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:55,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 01:19:55,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945677650] [2020-10-27 01:19:55,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 01:19:55,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:55,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 01:19:55,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:19:55,881 INFO L87 Difference]: Start difference. First operand 216 states and 289 transitions. Second operand 13 states. [2020-10-27 01:19:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:56,669 INFO L93 Difference]: Finished difference Result 328 states and 474 transitions. [2020-10-27 01:19:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:19:56,669 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-10-27 01:19:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:56,671 INFO L225 Difference]: With dead ends: 328 [2020-10-27 01:19:56,671 INFO L226 Difference]: Without dead ends: 238 [2020-10-27 01:19:56,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:19:56,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-27 01:19:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 227. [2020-10-27 01:19:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-27 01:19:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 305 transitions. [2020-10-27 01:19:56,700 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 305 transitions. Word has length 73 [2020-10-27 01:19:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:56,701 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 305 transitions. [2020-10-27 01:19:56,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 01:19:56,701 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 305 transitions. [2020-10-27 01:19:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 01:19:56,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:56,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:56,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 01:19:56,703 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1780421830, now seen corresponding path program 1 times [2020-10-27 01:19:56,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:56,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414061092] [2020-10-27 01:19:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:56,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:58,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:58,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 01:19:58,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:19:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2232 [2020-10-27 01:19:58,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:19:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 01:19:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 01:19:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:59,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:59,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:59,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:59,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:59,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:19:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:59,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:59,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:59,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:59,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:59,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:59,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:59,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:59,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:59,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:59,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:59,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:19:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:59,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:59,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:19:59,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 01:19:59,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:19:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:19:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:59,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:19:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:59,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:59,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:59,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:59,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:19:59,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:19:59,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:19:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:59,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:59,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:59,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:19:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:19:59,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:19:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:19:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:59,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 01:19:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:59,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:59,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:19:59,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:59,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 01:19:59,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:19:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:19:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:19:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:00,044 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2020-10-27 01:20:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 01:20:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:00,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:00,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:00,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:20:00,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:20:00,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:20:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:20:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:20:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 01:20:00,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414061092] [2020-10-27 01:20:00,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:20:00,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 01:20:00,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54708878] [2020-10-27 01:20:00,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 01:20:00,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:20:00,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 01:20:00,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:20:00,150 INFO L87 Difference]: Start difference. First operand 227 states and 305 transitions. Second operand 17 states. [2020-10-27 01:20:00,603 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 01:20:00,909 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 01:20:01,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:20:01,875 INFO L93 Difference]: Finished difference Result 236 states and 316 transitions. [2020-10-27 01:20:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 01:20:01,875 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-27 01:20:01,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:20:01,878 INFO L225 Difference]: With dead ends: 236 [2020-10-27 01:20:01,878 INFO L226 Difference]: Without dead ends: 227 [2020-10-27 01:20:01,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:20:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-27 01:20:01,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-10-27 01:20:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-27 01:20:01,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 304 transitions. [2020-10-27 01:20:01,909 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 304 transitions. Word has length 73 [2020-10-27 01:20:01,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:20:01,909 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 304 transitions. [2020-10-27 01:20:01,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 01:20:01,909 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 304 transitions. [2020-10-27 01:20:01,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 01:20:01,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:20:01,911 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:20:01,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 01:20:01,912 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:20:01,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:20:01,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1973985975, now seen corresponding path program 13 times [2020-10-27 01:20:01,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:20:01,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184354298] [2020-10-27 01:20:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:20:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:01,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:02,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:02,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 01:20:02,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:20:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-27 01:20:02,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:20:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 01:20:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 01:20:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:20:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:02,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:02,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:20:02,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:02,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:20:02,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:20:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:03,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:03,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:20:03,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:20:03,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:03,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:20:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:03,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:03,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:03,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:20:03,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:03,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 01:20:03,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:03,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:20:03,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:03,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:20:03,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 01:20:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:03,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:03,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:03,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:20:03,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:03,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 01:20:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:03,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:03,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:03,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:20:03,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:03,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:20:03,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:20:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:20:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:20:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 01:20:04,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184354298] [2020-10-27 01:20:04,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:20:04,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 01:20:04,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395238845] [2020-10-27 01:20:04,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 01:20:04,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:20:04,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 01:20:04,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:20:04,080 INFO L87 Difference]: Start difference. First operand 227 states and 304 transitions. Second operand 23 states. [2020-10-27 01:20:06,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:20:06,636 INFO L93 Difference]: Finished difference Result 258 states and 350 transitions. [2020-10-27 01:20:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:20:06,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-10-27 01:20:06,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:20:06,638 INFO L225 Difference]: With dead ends: 258 [2020-10-27 01:20:06,638 INFO L226 Difference]: Without dead ends: 250 [2020-10-27 01:20:06,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 01:20:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-27 01:20:06,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238. [2020-10-27 01:20:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-27 01:20:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 319 transitions. [2020-10-27 01:20:06,697 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 319 transitions. Word has length 71 [2020-10-27 01:20:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:20:06,698 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 319 transitions. [2020-10-27 01:20:06,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 01:20:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 319 transitions. [2020-10-27 01:20:06,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 01:20:06,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:20:06,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 01:20:06,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 01:20:06,700 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:20:06,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:20:06,701 INFO L82 PathProgramCache]: Analyzing trace with hash -24152351, now seen corresponding path program 1 times [2020-10-27 01:20:06,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:20:06,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678883117] [2020-10-27 01:20:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:20:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:06,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:06,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:06,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:07,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:11,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:11,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 01:20:11,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:20:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 01:20:11,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:20:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 01:20:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 01:20:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:11,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:20:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:11,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:11,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:20:11,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:20:11,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:11,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:20:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:11,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:11,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:11,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:20:11,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:11,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:11,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:20:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:11,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:11,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:11,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:20:11,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:11,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:20:11,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:11,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:20:11,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:11,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:20:11,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:12,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:20:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:12,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:12,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:12,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:12,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:20:12,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:12,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:12,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:20:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:12,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:12,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:12,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:12,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:20:12,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:12,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 01:20:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:12,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:12,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:20:12,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:20:12,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:20:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:20:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:20:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:13,412 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 102 [2020-10-27 01:20:13,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 01:20:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:13,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:13,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:20:13,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:13,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:20:13,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:13,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:20:13,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:20:13,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:20:13,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 01:20:13,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678883117] [2020-10-27 01:20:13,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:20:13,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 01:20:13,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411395099] [2020-10-27 01:20:13,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 01:20:13,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:20:13,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 01:20:13,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:20:13,852 INFO L87 Difference]: Start difference. First operand 238 states and 319 transitions. Second operand 21 states. [2020-10-27 01:20:14,495 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 01:20:14,966 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 01:20:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:20:16,824 INFO L93 Difference]: Finished difference Result 300 states and 462 transitions. [2020-10-27 01:20:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:20:16,825 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2020-10-27 01:20:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:20:16,827 INFO L225 Difference]: With dead ends: 300 [2020-10-27 01:20:16,827 INFO L226 Difference]: Without dead ends: 294 [2020-10-27 01:20:16,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 01:20:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-27 01:20:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 273. [2020-10-27 01:20:16,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-27 01:20:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 404 transitions. [2020-10-27 01:20:16,867 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 404 transitions. Word has length 74 [2020-10-27 01:20:16,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:20:16,867 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 404 transitions. [2020-10-27 01:20:16,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 01:20:16,867 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 404 transitions. [2020-10-27 01:20:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 01:20:16,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:20:16,870 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:20:16,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 01:20:16,870 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:20:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:20:16,870 INFO L82 PathProgramCache]: Analyzing trace with hash 839622529, now seen corresponding path program 2 times [2020-10-27 01:20:16,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:20:16,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606303811] [2020-10-27 01:20:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:20:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:17,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:17,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:17,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:21,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:21,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 01:20:21,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:20:21,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 01:20:21,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:20:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:20:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 01:20:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:22,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:20:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:22,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:22,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:20:22,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:20:22,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:22,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:22,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:22,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:20:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:22,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:22,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:22,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:22,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:20:22,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:20:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:20:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:20:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:22,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:22,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:22,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:20:22,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:20:22,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 01:20:22,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:20:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:20:22,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:22,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:20:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:22,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:22,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:22,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:22,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:20:22,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:20:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:22,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:22,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:22,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:22,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:22,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:20:22,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:22,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 01:20:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:22,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:22,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:22,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:20:22,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:20:22,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:20:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 01:20:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:22,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:22,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:20:22,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:22,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:20:22,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:20:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:20:22,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 01:20:22,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606303811] [2020-10-27 01:20:22,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:20:22,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 01:20:22,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258608889] [2020-10-27 01:20:22,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 01:20:22,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:20:22,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 01:20:22,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:20:22,568 INFO L87 Difference]: Start difference. First operand 273 states and 404 transitions. Second operand 24 states. [2020-10-27 01:20:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:20:24,858 INFO L93 Difference]: Finished difference Result 309 states and 475 transitions. [2020-10-27 01:20:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 01:20:24,859 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 76 [2020-10-27 01:20:24,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:20:24,862 INFO L225 Difference]: With dead ends: 309 [2020-10-27 01:20:24,863 INFO L226 Difference]: Without dead ends: 303 [2020-10-27 01:20:24,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 01:20:24,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-27 01:20:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 277. [2020-10-27 01:20:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-27 01:20:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 410 transitions. [2020-10-27 01:20:24,904 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 410 transitions. Word has length 76 [2020-10-27 01:20:24,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:20:24,905 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 410 transitions. [2020-10-27 01:20:24,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 01:20:24,905 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 410 transitions. [2020-10-27 01:20:24,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 01:20:24,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:20:24,907 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 01:20:24,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 01:20:24,907 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:20:24,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:20:24,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1899242974, now seen corresponding path program 1 times [2020-10-27 01:20:24,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:20:24,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010637359] [2020-10-27 01:20:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:20:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:24,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:25,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:25,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:25,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:29,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:29,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 01:20:29,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:20:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 01:20:29,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:20:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 01:20:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 01:20:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:30,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:20:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:30,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:30,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:30,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:20:30,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:30,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:20:30,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:30,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:30,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:20:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:30,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:30,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:30,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:30,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:20:30,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:30,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:30,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:20:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:30,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:30,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:30,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:30,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:20:30,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:20:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 01:20:30,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:20:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:20:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:30,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:20:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:30,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:30,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:30,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:20:30,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:30,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:20:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:30,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:30,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:30,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:30,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:20:30,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 01:20:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:30,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:30,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:30,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 01:20:30,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 01:20:30,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:20:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:20:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:20:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:33,027 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 174 DAG size of output: 156 [2020-10-27 01:20:33,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 01:20:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:33,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:33,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:33,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:20:33,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:20:33,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:20:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:20:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:20:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 01:20:33,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010637359] [2020-10-27 01:20:33,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:20:33,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 01:20:33,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923131477] [2020-10-27 01:20:33,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 01:20:33,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:20:33,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 01:20:33,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:20:33,222 INFO L87 Difference]: Start difference. First operand 277 states and 410 transitions. Second operand 21 states. [2020-10-27 01:20:34,159 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 01:20:34,913 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 01:20:35,439 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-27 01:20:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:20:37,052 INFO L93 Difference]: Finished difference Result 326 states and 523 transitions. [2020-10-27 01:20:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:20:37,057 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 76 [2020-10-27 01:20:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:20:37,060 INFO L225 Difference]: With dead ends: 326 [2020-10-27 01:20:37,060 INFO L226 Difference]: Without dead ends: 320 [2020-10-27 01:20:37,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 01:20:37,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-27 01:20:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 277. [2020-10-27 01:20:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-27 01:20:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 410 transitions. [2020-10-27 01:20:37,108 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 410 transitions. Word has length 76 [2020-10-27 01:20:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:20:37,109 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 410 transitions. [2020-10-27 01:20:37,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 01:20:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 410 transitions. [2020-10-27 01:20:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 01:20:37,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:20:37,111 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 01:20:37,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 01:20:37,112 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:20:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:20:37,112 INFO L82 PathProgramCache]: Analyzing trace with hash -94901732, now seen corresponding path program 1 times [2020-10-27 01:20:37,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:20:37,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603552874] [2020-10-27 01:20:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:20:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:37,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:37,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:37,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:37,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:39,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:42,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:42,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 01:20:42,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:20:42,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:20:42,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:20:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 01:20:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 01:20:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:42,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:20:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:42,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:42,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:42,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:20:42,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:42,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:20:42,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:42,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:42,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:20:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:42,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:42,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:42,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:42,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:42,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:20:42,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:42,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:42,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:20:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:42,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:42,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:20:42,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:42,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:20:42,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:42,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:20:42,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:42,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:20:42,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:42,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:20:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:42,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:42,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:42,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:42,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:42,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:20:42,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:42,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:42,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:42,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:42,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:42,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:20:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:42,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:42,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:42,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:20:42,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:42,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 01:20:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:42,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:42,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:42,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 01:20:42,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 01:20:42,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:20:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:20:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:20:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:43,514 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-27 01:20:43,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 01:20:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:43,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:43,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:43,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:20:43,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:43,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:20:43,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:43,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:20:43,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:20:43,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:20:43,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 01:20:43,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603552874] [2020-10-27 01:20:43,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:20:43,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 01:20:43,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522130624] [2020-10-27 01:20:43,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 01:20:43,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:20:43,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 01:20:43,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:20:43,652 INFO L87 Difference]: Start difference. First operand 277 states and 410 transitions. Second operand 22 states. [2020-10-27 01:20:44,214 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 01:20:44,573 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 01:20:46,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:20:46,325 INFO L93 Difference]: Finished difference Result 330 states and 529 transitions. [2020-10-27 01:20:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 01:20:46,326 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 76 [2020-10-27 01:20:46,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:20:46,331 INFO L225 Difference]: With dead ends: 330 [2020-10-27 01:20:46,331 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 01:20:46,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 01:20:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 01:20:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 281. [2020-10-27 01:20:46,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-27 01:20:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 416 transitions. [2020-10-27 01:20:46,376 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 416 transitions. Word has length 76 [2020-10-27 01:20:46,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:20:46,376 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 416 transitions. [2020-10-27 01:20:46,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 01:20:46,376 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 416 transitions. [2020-10-27 01:20:46,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 01:20:46,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:20:46,379 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:20:46,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 01:20:46,379 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:20:46,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:20:46,381 INFO L82 PathProgramCache]: Analyzing trace with hash 875840390, now seen corresponding path program 3 times [2020-10-27 01:20:46,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:20:46,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094001207] [2020-10-27 01:20:46,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:20:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:46,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:46,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:51,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:51,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 01:20:51,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:20:51,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 01:20:51,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 01:20:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 01:20:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 01:20:51,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:20:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:51,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:51,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:51,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:20:51,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:51,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:20:51,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:51,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:51,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:20:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:51,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:51,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:51,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:51,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:20:51,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:51,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:20:51,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:51,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:20:51,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:51,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:20:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:51,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:51,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:20:51,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:51,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 01:20:51,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:51,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:20:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:20:51,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:52,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:20:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:52,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:52,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:52,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:52,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:20:52,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:52,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:52,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:52,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:52,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:52,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:20:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:52,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:52,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:20:52,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:52,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:20:52,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:20:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:20:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:20:52,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:52,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 01:20:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:20:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:20:52,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:20:52,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:20:52,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:20:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 01:20:52,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:20:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:20:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:20:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:20:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:20:53,615 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-10-27 01:21:10,254 WARN L193 SmtUtils]: Spent 15.90 s on a formula simplification. DAG size of input: 653 DAG size of output: 280 [2020-10-27 01:21:10,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 01:21:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:10,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:10,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:10,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:21:10,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:10,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:21:10,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:21:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:21:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:21:10,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 01:21:11,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094001207] [2020-10-27 01:21:11,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:21:11,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 01:21:11,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115886463] [2020-10-27 01:21:11,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 01:21:11,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:21:11,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 01:21:11,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:21:11,465 INFO L87 Difference]: Start difference. First operand 281 states and 416 transitions. Second operand 24 states. [2020-10-27 01:21:13,412 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 01:21:15,177 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 281