/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/verifythis/duplets.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:44:17,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:44:17,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:44:17,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:44:17,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:44:18,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:44:18,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:44:18,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:44:18,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:44:18,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:44:18,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:44:18,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:44:18,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:44:18,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:44:18,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:44:18,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:44:18,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:44:18,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:44:18,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:44:18,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:44:18,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:44:18,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:44:18,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:44:18,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:44:18,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:44:18,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:44:18,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:44:18,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:44:18,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:44:18,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:44:18,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:44:18,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:44:18,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:44:18,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:44:18,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:44:18,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:44:18,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:44:18,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:44:18,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:44:18,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:44:18,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:44:18,073 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 06:44:18,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:44:18,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:44:18,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:44:18,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:44:18,140 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:44:18,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:44:18,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:44:18,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:44:18,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:44:18,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:44:18,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:44:18,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:44:18,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:44:18,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:44:18,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:44:18,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:44:18,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:44:18,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:44:18,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:44:18,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:44:18,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:44:18,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:44:18,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:44:18,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:44:18,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:44:18,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:44:18,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:44:18,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:44:18,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:44:18,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:44:18,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:44:18,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:44:18,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:44:18,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:44:18,564 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:44:18,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/duplets.c [2020-10-27 06:44:18,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9173b0027/2e0fe92cbdcd424a947e0671948d5eef/FLAGe9f5398b2 [2020-10-27 06:44:19,302 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:44:19,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/duplets.c [2020-10-27 06:44:19,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9173b0027/2e0fe92cbdcd424a947e0671948d5eef/FLAGe9f5398b2 [2020-10-27 06:44:19,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9173b0027/2e0fe92cbdcd424a947e0671948d5eef [2020-10-27 06:44:19,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:44:19,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:44:19,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:44:19,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:44:19,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:44:19,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:44:19" (1/1) ... [2020-10-27 06:44:19,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24994ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:19, skipping insertion in model container [2020-10-27 06:44:19,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:44:19" (1/1) ... [2020-10-27 06:44:19,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:44:19,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:44:19,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:44:19,978 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:44:20,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:44:20,034 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:44:20,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:20 WrapperNode [2020-10-27 06:44:20,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:44:20,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:44:20,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:44:20,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:44:20,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:20" (1/1) ... [2020-10-27 06:44:20,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:20" (1/1) ... [2020-10-27 06:44:20,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:20" (1/1) ... [2020-10-27 06:44:20,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:20" (1/1) ... [2020-10-27 06:44:20,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:20" (1/1) ... [2020-10-27 06:44:20,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:20" (1/1) ... [2020-10-27 06:44:20,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:20" (1/1) ... [2020-10-27 06:44:20,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:44:20,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:44:20,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:44:20,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:44:20,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:20" (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 06:44:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:44:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:44:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:44:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 06:44:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:44:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure mkdup [2020-10-27 06:44:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure finddup [2020-10-27 06:44:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:44:20,218 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-27 06:44:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 06:44:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 06:44:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:44:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:44:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:44:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:44:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 06:44:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 06:44:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:44:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure mkdup [2020-10-27 06:44:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:44:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure finddup [2020-10-27 06:44:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:44:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:44:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 06:44:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-27 06:44:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:44:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:44:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:44:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:44:20,787 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:44:20,788 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 06:44:20,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:44:20 BoogieIcfgContainer [2020-10-27 06:44:20,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:44:20,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:44:20,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:44:20,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:44:20,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:44:19" (1/3) ... [2020-10-27 06:44:20,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa7fbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:44:20, skipping insertion in model container [2020-10-27 06:44:20,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:20" (2/3) ... [2020-10-27 06:44:20,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa7fbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:44:20, skipping insertion in model container [2020-10-27 06:44:20,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:44:20" (3/3) ... [2020-10-27 06:44:20,800 INFO L111 eAbstractionObserver]: Analyzing ICFG duplets.c [2020-10-27 06:44:20,814 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:44:20,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:44:20,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:44:20,867 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:44:20,868 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:44:20,868 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:44:20,868 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:44:20,868 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:44:20,869 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:44:20,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:44:20,869 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:44:20,889 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-27 06:44:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 06:44:20,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:44:20,898 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:20,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:44:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:44:20,905 INFO L82 PathProgramCache]: Analyzing trace with hash 960128656, now seen corresponding path program 1 times [2020-10-27 06:44:20,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:44:20,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426325575] [2020-10-27 06:44:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:44:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:21,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 06:44:21,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:44:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-27 06:44:21,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:21,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:21,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 06:44:21,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:21,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:44:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:44:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:21,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:21,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:21,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:44:21,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:21,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:21,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:21,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:44:21,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 06:44:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:21,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:44:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:21,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:21,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:44:21,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:44:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:21,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:44:21,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:44:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:21,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:44:21,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:44:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 06:44:21,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:44:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:21,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:21,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:44:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:21,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:21,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:21,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:21,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:44:21,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:21,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:21,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 06:44:21,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:21,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:21,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:21,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:21,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:44:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:44:21,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 06:44:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:21,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:21,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:44:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:21,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:21,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:21,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:44:21,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:44:21,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 06:44:21,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:21,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:44:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:21,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:21,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:21,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:44:21,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:44:21,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:44:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:21,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 06:44:21,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426325575] [2020-10-27 06:44:21,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:44:21,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:44:21,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166509938] [2020-10-27 06:44:21,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:44:21,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:44:21,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:44:21,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:44:21,979 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 4 states. [2020-10-27 06:44:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:44:22,352 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2020-10-27 06:44:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:44:22,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-27 06:44:22,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:44:22,368 INFO L225 Difference]: With dead ends: 118 [2020-10-27 06:44:22,368 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 06:44:22,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 06:44:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 06:44:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-27 06:44:22,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 06:44:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-10-27 06:44:22,431 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 50 [2020-10-27 06:44:22,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:44:22,432 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-10-27 06:44:22,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:44:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-10-27 06:44:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 06:44:22,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:44:22,435 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:22,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:44:22,436 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:44:22,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:44:22,437 INFO L82 PathProgramCache]: Analyzing trace with hash 771521296, now seen corresponding path program 1 times [2020-10-27 06:44:22,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:44:22,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538016216] [2020-10-27 06:44:22,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:44:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:22,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:24,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:24,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 06:44:24,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:44:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1659 [2020-10-27 06:44:24,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:44:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:44:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 06:44:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:44:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:24,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:24,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:24,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:44:24,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:24,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:24,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:24,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:24,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:24,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:24,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:44:24,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:24,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:44:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:24,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:24,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:24,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:44:24,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:24,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:44:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:24,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:24,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:44:24,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:44:24,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-27 06:44:24,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:44:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:44:24,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:24,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:44:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:24,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:24,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:24,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:44:24,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:24,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:24,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:24,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:24,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:24,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:44:24,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:24,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:44:24,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:24,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:44:24,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:24,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:44:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:24,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:24,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:24,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:24,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:44:24,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:24,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:44:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:44:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:44:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:24,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:24,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:24,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:44:24,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:24,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:44:24,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:44:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:44:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:24,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 06:44:24,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538016216] [2020-10-27 06:44:24,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:44:24,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 06:44:24,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057543590] [2020-10-27 06:44:24,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 06:44:24,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:44:24,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 06:44:24,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 06:44:24,796 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 11 states. [2020-10-27 06:44:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:44:25,804 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2020-10-27 06:44:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 06:44:25,804 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-27 06:44:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:44:25,809 INFO L225 Difference]: With dead ends: 86 [2020-10-27 06:44:25,810 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 06:44:25,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-27 06:44:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 06:44:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-10-27 06:44:25,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 06:44:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-27 06:44:25,841 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 50 [2020-10-27 06:44:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:44:25,844 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-27 06:44:25,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 06:44:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-27 06:44:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 06:44:25,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:44:25,849 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:25,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:44:25,850 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:44:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:44:25,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1753049532, now seen corresponding path program 1 times [2020-10-27 06:44:25,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:44:25,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983331045] [2020-10-27 06:44:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:44:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:26,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:26,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 06:44:26,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:26,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-27 06:44:26,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:26,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:44:26,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-27 06:44:26,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:44:26,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:44:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:26,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:26,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:26,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:26,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:44:26,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:26,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:26,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:26,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:26,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:26,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:44:26,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:26,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:44:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:26,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:26,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:26,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:44:26,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:44:26,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:44:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:26,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:26,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:44:26,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:26,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:44:26,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:44:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:26,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:26,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:26,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:26,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:26,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:44:26,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:26,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:26,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:26,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:26,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:26,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:26,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:44:26,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:26,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:26,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:44:26,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:44:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:26,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:26,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:26,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:26,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:26,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:26,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:44:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:26,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:26,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:44:26,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 06:44:26,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:44:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:44:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 06:44:26,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983331045] [2020-10-27 06:44:26,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:44:26,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 06:44:26,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694641711] [2020-10-27 06:44:26,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:44:26,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:44:26,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:44:26,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:44:26,679 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 9 states. [2020-10-27 06:44:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:44:27,315 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2020-10-27 06:44:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 06:44:27,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-27 06:44:27,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:44:27,319 INFO L225 Difference]: With dead ends: 77 [2020-10-27 06:44:27,320 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 06:44:27,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-27 06:44:27,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 06:44:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-10-27 06:44:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 06:44:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-27 06:44:27,351 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2020-10-27 06:44:27,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:44:27,354 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-27 06:44:27,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:44:27,354 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-27 06:44:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 06:44:27,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:44:27,356 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:27,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:44:27,357 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:44:27,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:44:27,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1569139005, now seen corresponding path program 1 times [2020-10-27 06:44:27,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:44:27,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073275912] [2020-10-27 06:44:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:44:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:27,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:29,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:29,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 06:44:29,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:44:29,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2166 [2020-10-27 06:44:29,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 06:44:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:44:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 06:44:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:44:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:44:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:29,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:29,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:29,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:44:29,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:29,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:29,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:29,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:29,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:29,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:29,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:29,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:44:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:29,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:29,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:29,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:29,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:44:29,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:29,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:44:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:29,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:29,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:29,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:44:29,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:29,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 06:44:29,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:44:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:44:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:29,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:44:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:29,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:29,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:29,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:29,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:44:29,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:29,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:29,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:29,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:29,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:29,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:30,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:30,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:30,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:30,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:44:30,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:30,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:44:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:30,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:30,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:30,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:30,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:30,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:44:30,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:30,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:30,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:44:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:30,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:30,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:30,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 06:44:30,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:44:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 06:44:30,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:44:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:44:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:44:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 06:44:30,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073275912] [2020-10-27 06:44:30,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:44:30,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 06:44:30,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650257172] [2020-10-27 06:44:30,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 06:44:30,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:44:30,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 06:44:30,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-27 06:44:30,253 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 15 states. [2020-10-27 06:44:30,990 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-27 06:44:31,124 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-27 06:44:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:44:31,665 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2020-10-27 06:44:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:44:31,665 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-27 06:44:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:44:31,667 INFO L225 Difference]: With dead ends: 99 [2020-10-27 06:44:31,667 INFO L226 Difference]: Without dead ends: 77 [2020-10-27 06:44:31,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2020-10-27 06:44:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-27 06:44:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-10-27 06:44:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 06:44:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2020-10-27 06:44:31,691 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 53 [2020-10-27 06:44:31,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:44:31,692 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2020-10-27 06:44:31,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 06:44:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2020-10-27 06:44:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 06:44:31,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:44:31,698 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-27 06:44:31,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:44:31,698 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:44:31,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:44:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash -655740944, now seen corresponding path program 2 times [2020-10-27 06:44:31,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:44:31,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974943621] [2020-10-27 06:44:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:44:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:31,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:32,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:32,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 06:44:32,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:44:32,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-10-27 06:44:32,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 06:44:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:44:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 06:44:32,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:32,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:44:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:32,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:32,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:32,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:32,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:32,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:44:32,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:32,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:32,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:32,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:32,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:32,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:32,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:32,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:44:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:32,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:32,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:32,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:32,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:44:32,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:32,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:32,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:44:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:32,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:33,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:33,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:44:33,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:33,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 06:44:33,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:44:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:44:33,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:44:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:33,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:33,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:33,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:33,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 06:44:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:33,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 06:44:33,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:33,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:33,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:33,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:33,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:44:33,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:33,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:44:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:33,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:33,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:33,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:33,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:33,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:44:33,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:33,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:44:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:33,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:33,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:33,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:44:33,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:44:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 06:44:33,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:44:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 06:44:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 06:44:33,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974943621] [2020-10-27 06:44:33,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:44:33,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 06:44:33,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56955094] [2020-10-27 06:44:33,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 06:44:33,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:44:33,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 06:44:33,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-27 06:44:33,478 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 15 states. [2020-10-27 06:44:34,228 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-27 06:44:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:44:35,274 INFO L93 Difference]: Finished difference Result 119 states and 144 transitions. [2020-10-27 06:44:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 06:44:35,275 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-27 06:44:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:44:35,278 INFO L225 Difference]: With dead ends: 119 [2020-10-27 06:44:35,279 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 06:44:35,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2020-10-27 06:44:35,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 06:44:35,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-27 06:44:35,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 06:44:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2020-10-27 06:44:35,300 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 56 [2020-10-27 06:44:35,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:44:35,301 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2020-10-27 06:44:35,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 06:44:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2020-10-27 06:44:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 06:44:35,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:44:35,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-27 06:44:35,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:44:35,303 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:44:35,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:44:35,303 INFO L82 PathProgramCache]: Analyzing trace with hash -956987836, now seen corresponding path program 1 times [2020-10-27 06:44:35,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:44:35,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838756451] [2020-10-27 06:44:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:44:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:35,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:35,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:35,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:36,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:36,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:37,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:38,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:38,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 06:44:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:44:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3391 [2020-10-27 06:44:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 06:44:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:44:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 06:44:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:38,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:44:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:38,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:38,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:38,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:38,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:38,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:44:38,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:38,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:38,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:38,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:38,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:38,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:38,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:38,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:38,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:44:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:38,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:38,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:38,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:38,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:38,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:44:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:38,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:38,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:39,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:39,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:44:39,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:44:39,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 06:44:39,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:44:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:44:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:44:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:39,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:39,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:39,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:39,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:39,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:44:39,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:44:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:44:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:39,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:39,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:39,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:39,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:39,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:44:39,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:39,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:39,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:44:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:39,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:39,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:39,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:39,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:44:39,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:44:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:44:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:39,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:44:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:39,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:39,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:44:39,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:44:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 06:44:39,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:44:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:44:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:39,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 06:44:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:39,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:39,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:39,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:39,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:39,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:44:39,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:44:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:44:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 06:44:39,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838756451] [2020-10-27 06:44:39,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:44:39,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 06:44:39,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681415553] [2020-10-27 06:44:39,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 06:44:39,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:44:39,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 06:44:39,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-27 06:44:39,321 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand 16 states. [2020-10-27 06:44:40,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:44:40,762 INFO L93 Difference]: Finished difference Result 93 states and 112 transitions. [2020-10-27 06:44:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:44:40,763 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-27 06:44:40,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:44:40,765 INFO L225 Difference]: With dead ends: 93 [2020-10-27 06:44:40,765 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 06:44:40,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2020-10-27 06:44:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 06:44:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2020-10-27 06:44:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 06:44:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2020-10-27 06:44:40,799 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 58 [2020-10-27 06:44:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:44:40,799 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2020-10-27 06:44:40,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 06:44:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2020-10-27 06:44:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 06:44:40,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:44:40,800 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-27 06:44:40,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:44:40,801 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:44:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:44:40,801 INFO L82 PathProgramCache]: Analyzing trace with hash -899729534, now seen corresponding path program 1 times [2020-10-27 06:44:40,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:44:40,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910817118] [2020-10-27 06:44:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:44:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:41,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 06:44:41,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:44:41,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-27 06:44:41,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:44:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 06:44:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 06:44:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:41,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:44:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:41,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:41,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:41,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:41,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:44:41,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:41,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:41,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:41,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:41,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:41,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:41,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:41,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:44:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:41,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:41,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:41,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:41,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:41,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:41,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:44:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:41,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:41,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:44:41,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:41,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:44:41,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:41,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:41,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:44:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:41,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:41,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:41,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:41,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:41,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:41,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:41,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:41,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:41,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:41,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:41,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:41,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:41,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:41,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:41,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:44:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:41,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:41,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:41,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:41,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:41,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:41,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:41,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:41,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:44:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:41,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:44:41,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:41,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 06:44:41,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:41,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:44:41,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 06:44:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:41,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:41,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:41,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:41,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:41,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:41,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:44:41,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:41,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:44:41,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 06:44:41,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910817118] [2020-10-27 06:44:41,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:44:41,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 06:44:41,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284178594] [2020-10-27 06:44:41,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:44:41,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:44:41,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:44:41,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:44:41,747 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 9 states. [2020-10-27 06:44:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:44:42,361 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2020-10-27 06:44:42,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 06:44:42,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-27 06:44:42,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:44:42,364 INFO L225 Difference]: With dead ends: 103 [2020-10-27 06:44:42,365 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 06:44:42,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-27 06:44:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 06:44:42,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2020-10-27 06:44:42,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 06:44:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-10-27 06:44:42,392 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 58 [2020-10-27 06:44:42,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:44:42,392 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-10-27 06:44:42,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:44:42,393 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-10-27 06:44:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 06:44:42,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:44:42,397 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-27 06:44:42,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:44:42,397 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:44:42,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:44:42,398 INFO L82 PathProgramCache]: Analyzing trace with hash 2094365383, now seen corresponding path program 1 times [2020-10-27 06:44:42,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:44:42,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103181363] [2020-10-27 06:44:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:44:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:42,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:43,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:47,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:47,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 06:44:47,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:44:47,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 06:44:47,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 06:44:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:44:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 06:44:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:47,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:44:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:47,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:47,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:47,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:47,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:44:47,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:47,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:47,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:47,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:47,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:47,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:47,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:47,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:47,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:47,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:47,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:47,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:47,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:47,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:47,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:44:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:47,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:47,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:47,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:47,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:44:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:47,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:47,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:44:47,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:47,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 06:44:47,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:47,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 06:44:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:44:47,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:48,011 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2020-10-27 06:44:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:44:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:48,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:48,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:48,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:44:48,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:48,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:48,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:48,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:48,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:48,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:48,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 06:44:48,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:44:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:48,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:48,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:48,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:48,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:44:48,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:48,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:44:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:48,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:48,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:48,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:48,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 06:44:48,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:44:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-27 06:44:48,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:44:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:44:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 06:44:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 06:44:49,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103181363] [2020-10-27 06:44:49,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:44:49,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 06:44:49,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48418072] [2020-10-27 06:44:49,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 06:44:49,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:44:49,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 06:44:49,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-10-27 06:44:49,268 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 20 states. [2020-10-27 06:44:50,135 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-27 06:44:50,394 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-27 06:44:50,634 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-10-27 06:44:51,003 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-27 06:44:51,233 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-27 06:44:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:44:52,460 INFO L93 Difference]: Finished difference Result 130 states and 160 transitions. [2020-10-27 06:44:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 06:44:52,461 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 59 [2020-10-27 06:44:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:44:52,465 INFO L225 Difference]: With dead ends: 130 [2020-10-27 06:44:52,465 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 06:44:52,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=235, Invalid=1247, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 06:44:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 06:44:52,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2020-10-27 06:44:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 06:44:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2020-10-27 06:44:52,495 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 59 [2020-10-27 06:44:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:44:52,499 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2020-10-27 06:44:52,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 06:44:52,499 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2020-10-27 06:44:52,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 06:44:52,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:44:52,501 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:52,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:44:52,501 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:44:52,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:44:52,502 INFO L82 PathProgramCache]: Analyzing trace with hash -202573274, now seen corresponding path program 2 times [2020-10-27 06:44:52,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:44:52,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169927901] [2020-10-27 06:44:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:44:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:52,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:56,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:57,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:57,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 06:44:57,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:44:57,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:44:57,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 06:44:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:44:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 06:44:57,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:57,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:44:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:57,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:57,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:57,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:57,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:57,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:44:57,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:57,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:57,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:57,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:57,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:57,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:57,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:57,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:57,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:57,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:57,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:44:57,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:57,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:44:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:57,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:57,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:44:57,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:57,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:44:57,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:44:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:44:57,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:57,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:44:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:57,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:57,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:44:57,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 06:44:57,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 06:44:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:44:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:58,164 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-10-27 06:44:58,320 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-27 06:44:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:44:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:58,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:58,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:58,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:58,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:44:58,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:44:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:58,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:58,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:58,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:44:58,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:58,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:58,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:44:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:58,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:58,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:44:58,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:44:58,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:44:58,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:44:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:44:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:44:58,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:44:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:44:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:58,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:58,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:44:58,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:44:58,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:44:58,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:44:58,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 06:44:58,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:44:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 06:44:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:44:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:44:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:44:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 06:44:59,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169927901] [2020-10-27 06:44:59,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:44:59,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 06:44:59,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565082537] [2020-10-27 06:44:59,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 06:44:59,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:44:59,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 06:44:59,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-27 06:44:59,031 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 18 states. [2020-10-27 06:44:59,794 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-27 06:45:00,015 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-27 06:45:00,229 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-27 06:45:01,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:45:01,630 INFO L93 Difference]: Finished difference Result 150 states and 186 transitions. [2020-10-27 06:45:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 06:45:01,630 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2020-10-27 06:45:01,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:45:01,632 INFO L225 Difference]: With dead ends: 150 [2020-10-27 06:45:01,633 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 06:45:01,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 06:45:01,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 06:45:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 89. [2020-10-27 06:45:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 06:45:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2020-10-27 06:45:01,649 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 62 [2020-10-27 06:45:01,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:45:01,650 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2020-10-27 06:45:01,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 06:45:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2020-10-27 06:45:01,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 06:45:01,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:45:01,651 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:45:01,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:45:01,651 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:45:01,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:45:01,652 INFO L82 PathProgramCache]: Analyzing trace with hash 113043580, now seen corresponding path program 1 times [2020-10-27 06:45:01,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:45:01,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908739649] [2020-10-27 06:45:01,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:45:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:02,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:02,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 06:45:02,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:45:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-10-27 06:45:02,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 06:45:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:45:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 06:45:02,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:02,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:45:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:02,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:02,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:02,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:02,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:02,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:45:02,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:02,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:02,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:02,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:02,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:02,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:02,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:02,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:02,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:02,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:45:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:02,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:02,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:02,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:02,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:02,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:02,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:02,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:45:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:02,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:02,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:45:02,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:02,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 06:45:02,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:45:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:45:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:02,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:45:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:02,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:02,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:02,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:02,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:45:02,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:02,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:02,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:02,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:02,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:02,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:02,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:45:02,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:02,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:02,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:02,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:02,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:45:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:02,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:02,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:02,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:45:02,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:02,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:45:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:02,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:02,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:02,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:45:02,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:45:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 06:45:02,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:45:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:45:02,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 06:45:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:03,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:03,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:03,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:03,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:03,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 06:45:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:03,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:03,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:03,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:03,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:03,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:45:03,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:03,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-27 06:45:03,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908739649] [2020-10-27 06:45:03,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:45:03,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 06:45:03,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054954831] [2020-10-27 06:45:03,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 06:45:03,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:45:03,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 06:45:03,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-27 06:45:03,032 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 18 states. [2020-10-27 06:45:04,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:45:04,777 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2020-10-27 06:45:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 06:45:04,777 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 65 [2020-10-27 06:45:04,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:45:04,779 INFO L225 Difference]: With dead ends: 112 [2020-10-27 06:45:04,780 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 06:45:04,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 06:45:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 06:45:04,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-10-27 06:45:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 06:45:04,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2020-10-27 06:45:04,796 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 65 [2020-10-27 06:45:04,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:45:04,796 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2020-10-27 06:45:04,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 06:45:04,796 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2020-10-27 06:45:04,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 06:45:04,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:45:04,797 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:45:04,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 06:45:04,798 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:45:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:45:04,798 INFO L82 PathProgramCache]: Analyzing trace with hash 170301882, now seen corresponding path program 1 times [2020-10-27 06:45:04,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:45:04,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339016624] [2020-10-27 06:45:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:45:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:04,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 06:45:05,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:45:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-27 06:45:05,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:45:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 06:45:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 06:45:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:45:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:05,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:05,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:45:05,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:05,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:05,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:05,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:05,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:05,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:05,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:45:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:05,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:05,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:05,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:05,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:05,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:05,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:45:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:45:05,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:45:05,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:05,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:45:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:05,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:05,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:45:05,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:05,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:05,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:45:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:05,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:05,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:05,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:05,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:05,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:45:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:45:05,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 06:45:05,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:45:05,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 06:45:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:05,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:05,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:05,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 06:45:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:05,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:05,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:05,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:05,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:05,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 06:45:05,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339016624] [2020-10-27 06:45:05,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:45:05,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 06:45:05,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214548324] [2020-10-27 06:45:05,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:45:05,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:45:05,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:45:05,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:45:05,372 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand 9 states. [2020-10-27 06:45:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:45:06,078 INFO L93 Difference]: Finished difference Result 137 states and 168 transitions. [2020-10-27 06:45:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 06:45:06,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-27 06:45:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:45:06,080 INFO L225 Difference]: With dead ends: 137 [2020-10-27 06:45:06,080 INFO L226 Difference]: Without dead ends: 125 [2020-10-27 06:45:06,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-27 06:45:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-27 06:45:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 116. [2020-10-27 06:45:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 06:45:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2020-10-27 06:45:06,099 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 65 [2020-10-27 06:45:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:45:06,100 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2020-10-27 06:45:06,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:45:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2020-10-27 06:45:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 06:45:06,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:45:06,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-27 06:45:06,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 06:45:06,101 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:45:06,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:45:06,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1240168515, now seen corresponding path program 3 times [2020-10-27 06:45:06,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:45:06,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408915561] [2020-10-27 06:45:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:45:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:06,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:11,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:11,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 06:45:11,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:45:11,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 06:45:11,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 06:45:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:45:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 06:45:11,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:11,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:45:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:11,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:11,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:45:11,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:11,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:11,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:11,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:11,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:11,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:11,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:11,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:11,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:11,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:45:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:11,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:11,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:11,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:11,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:11,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:11,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:11,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:45:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:11,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:11,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:45:11,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:11,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 06:45:11,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 06:45:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:45:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:11,556 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-10-27 06:45:11,698 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-10-27 06:45:11,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:45:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:11,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:11,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:11,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:11,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:45:11,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:11,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:11,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:11,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:11,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:45:11,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:45:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:11,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:11,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:11,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:11,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:45:11,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:45:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:11,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:11,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:12,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:12,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:12,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:12,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 06:45:12,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:45:12,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-27 06:45:12,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 06:45:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:45:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 06:45:12,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 06:45:12,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408915561] [2020-10-27 06:45:12,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:45:12,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 06:45:12,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909881871] [2020-10-27 06:45:12,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 06:45:12,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:45:12,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 06:45:12,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:45:12,982 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand 22 states. [2020-10-27 06:45:13,780 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-27 06:45:13,989 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-27 06:45:14,181 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-27 06:45:14,473 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-27 06:45:14,730 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-27 06:45:15,060 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-27 06:45:15,265 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 06:45:15,609 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2020-10-27 06:45:16,073 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-27 06:45:16,845 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-27 06:45:17,043 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2020-10-27 06:45:17,242 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-10-27 06:45:17,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:45:17,835 INFO L93 Difference]: Finished difference Result 183 states and 228 transitions. [2020-10-27 06:45:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 06:45:17,836 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-10-27 06:45:17,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:45:17,838 INFO L225 Difference]: With dead ends: 183 [2020-10-27 06:45:17,838 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 06:45:17,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=298, Invalid=1864, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 06:45:17,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 06:45:17,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116. [2020-10-27 06:45:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 06:45:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 141 transitions. [2020-10-27 06:45:17,857 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 141 transitions. Word has length 65 [2020-10-27 06:45:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:45:17,857 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 141 transitions. [2020-10-27 06:45:17,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 06:45:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 141 transitions. [2020-10-27 06:45:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 06:45:17,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:45:17,859 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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 06:45:17,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 06:45:17,859 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:45:17,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:45:17,860 INFO L82 PathProgramCache]: Analyzing trace with hash -7151739, now seen corresponding path program 1 times [2020-10-27 06:45:17,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:45:17,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303756946] [2020-10-27 06:45:17,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:45:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:17,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:18,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:18,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 06:45:18,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:45:18,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-10-27 06:45:18,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 06:45:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:45:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 06:45:18,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:18,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:45:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:18,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:18,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:18,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:45:18,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:18,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:18,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:18,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:18,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:18,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:18,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:45:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:18,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:18,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:18,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:18,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:18,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:18,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:18,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:18,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:18,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:18,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:45:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:18,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:18,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:45:18,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:18,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 06:45:18,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 06:45:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:45:18,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:19,175 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2020-10-27 06:45:19,324 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2020-10-27 06:45:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:45:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:19,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:19,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:19,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:19,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:19,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:45:19,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:19,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:19,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:19,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:19,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:19,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:19,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:45:19,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:19,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:19,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:19,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:19,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:45:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:19,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:19,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:19,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 06:45:19,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:19,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:45:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:19,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:19,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 06:45:19,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:45:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 06:45:19,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:45:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:45:19,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 06:45:19,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:20,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 06:45:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:20,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:20,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:20,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:20,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:45:20,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:20,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:20,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:20,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:20,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 06:45:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:20,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:20,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:20,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:20,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:20,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:45:20,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-27 06:45:20,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303756946] [2020-10-27 06:45:20,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:45:20,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 06:45:20,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126461427] [2020-10-27 06:45:20,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 06:45:20,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:45:20,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 06:45:20,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:45:20,252 INFO L87 Difference]: Start difference. First operand 116 states and 141 transitions. Second operand 22 states. [2020-10-27 06:45:21,226 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-27 06:45:21,392 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-27 06:45:21,823 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2020-10-27 06:45:22,124 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-27 06:45:22,327 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2020-10-27 06:45:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:45:23,469 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2020-10-27 06:45:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 06:45:23,469 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 68 [2020-10-27 06:45:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:45:23,472 INFO L225 Difference]: With dead ends: 142 [2020-10-27 06:45:23,472 INFO L226 Difference]: Without dead ends: 139 [2020-10-27 06:45:23,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 06:45:23,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-27 06:45:23,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 118. [2020-10-27 06:45:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 06:45:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2020-10-27 06:45:23,497 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 68 [2020-10-27 06:45:23,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:45:23,497 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2020-10-27 06:45:23,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 06:45:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2020-10-27 06:45:23,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 06:45:23,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:45:23,498 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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 06:45:23,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 06:45:23,499 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:45:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:45:23,499 INFO L82 PathProgramCache]: Analyzing trace with hash 50106563, now seen corresponding path program 1 times [2020-10-27 06:45:23,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:45:23,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60154648] [2020-10-27 06:45:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:45:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:23,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:25,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:25,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 06:45:25,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:45:25,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1754 [2020-10-27 06:45:25,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 06:45:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 06:45:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 06:45:25,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:45:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:25,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:25,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:25,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:45:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:25,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:25,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:25,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:25,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:25,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:25,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:25,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:25,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:45:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:25,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:25,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:25,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:25,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:25,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:45:25,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:45:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:25,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:25,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:45:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:25,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:25,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:45:25,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-27 06:45:25,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:25,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 06:45:25,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:45:25,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 06:45:25,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:45:25,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:45:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:25,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:25,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:25,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:25,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:25,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:45:25,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:25,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:26,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:26,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:26,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:26,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:26,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:45:26,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:26,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:45:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:26,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:26,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:26,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:26,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:45:26,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:26,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:26,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:26,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:26,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:45:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:26,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:26,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:26,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 06:45:26,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:45:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 06:45:26,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:45:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:45:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 06:45:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:26,740 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-27 06:45:26,962 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-10-27 06:45:27,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 06:45:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:27,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:27,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:27,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:27,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 06:45:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:27,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:27,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:27,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:45:27,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 06:45:27,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60154648] [2020-10-27 06:45:27,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:45:27,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 06:45:27,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042730676] [2020-10-27 06:45:27,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 06:45:27,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:45:27,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 06:45:27,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-27 06:45:27,153 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand 24 states. [2020-10-27 06:45:28,909 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-10-27 06:45:29,349 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 86 [2020-10-27 06:45:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:45:31,012 INFO L93 Difference]: Finished difference Result 147 states and 182 transitions. [2020-10-27 06:45:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 06:45:31,013 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 68 [2020-10-27 06:45:31,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:45:31,015 INFO L225 Difference]: With dead ends: 147 [2020-10-27 06:45:31,015 INFO L226 Difference]: Without dead ends: 135 [2020-10-27 06:45:31,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=202, Invalid=1438, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 06:45:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-27 06:45:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 102. [2020-10-27 06:45:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 06:45:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2020-10-27 06:45:31,054 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 68 [2020-10-27 06:45:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:45:31,054 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2020-10-27 06:45:31,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 06:45:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2020-10-27 06:45:31,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 06:45:31,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:45:31,056 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-27 06:45:31,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 06:45:31,056 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:45:31,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:45:31,056 INFO L82 PathProgramCache]: Analyzing trace with hash 48832209, now seen corresponding path program 1 times [2020-10-27 06:45:31,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:45:31,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987147506] [2020-10-27 06:45:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:45:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:31,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:31,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:31,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:32,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:32,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:32,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:32,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:35,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:36,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 06:45:36,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:45:36,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 06:45:36,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:36,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 06:45:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:45:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 06:45:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:36,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:45:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:36,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:45:36,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:36,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:36,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:36,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:36,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:36,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:36,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:45:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:36,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:36,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:36,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:36,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:36,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:45:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:36,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:45:36,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 06:45:36,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:45:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:45:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:45:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:36,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:36,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:36,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:45:36,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:36,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:36,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:36,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:36,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:45:36,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:45:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:36,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:36,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:36,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:45:36,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:36,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:36,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:36,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:45:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:36,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:36,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:36,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 06:45:36,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:45:36,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-27 06:45:36,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:45:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 06:45:36,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:37,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 06:45:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:37,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:37,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:37,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:37,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-27 06:45:37,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987147506] [2020-10-27 06:45:37,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:45:37,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 06:45:37,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405910551] [2020-10-27 06:45:37,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 06:45:37,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:45:37,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 06:45:37,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-27 06:45:37,033 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand 20 states. [2020-10-27 06:45:37,778 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-27 06:45:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:45:38,958 INFO L93 Difference]: Finished difference Result 116 states and 137 transitions. [2020-10-27 06:45:38,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 06:45:38,958 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-27 06:45:38,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:45:38,961 INFO L225 Difference]: With dead ends: 116 [2020-10-27 06:45:38,961 INFO L226 Difference]: Without dead ends: 113 [2020-10-27 06:45:38,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 06:45:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-27 06:45:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2020-10-27 06:45:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-27 06:45:38,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2020-10-27 06:45:38,978 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 67 [2020-10-27 06:45:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:45:38,978 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2020-10-27 06:45:38,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 06:45:38,978 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2020-10-27 06:45:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 06:45:38,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:45:38,979 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-27 06:45:38,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 06:45:38,980 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:45:38,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:45:38,980 INFO L82 PathProgramCache]: Analyzing trace with hash 106090511, now seen corresponding path program 1 times [2020-10-27 06:45:38,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:45:38,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589411671] [2020-10-27 06:45:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:45:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:39,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:39,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:40,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:41,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:41,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 06:45:41,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:45:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2678 [2020-10-27 06:45:41,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 06:45:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 06:45:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 06:45:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:42,966 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 180 DAG size of output: 71 [2020-10-27 06:45:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:45:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:43,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:43,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:43,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:43,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:43,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:45:43,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:43,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:43,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:43,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:43,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:43,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:43,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:43,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:45:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:45:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:43,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:45:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:43,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:43,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:43,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:45:43,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:43,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:45:43,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:45:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:43,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:43,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:45:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:43,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:43,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:43,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:45:43,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:43,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-27 06:45:43,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 06:45:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:45:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 06:45:43,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:44,466 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 22 [2020-10-27 06:45:44,874 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 28 [2020-10-27 06:45:45,341 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 32 [2020-10-27 06:45:52,110 WARN L193 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 550 DAG size of output: 83 [2020-10-27 06:45:52,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:45:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:52,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:52,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:52,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:52,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:52,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:45:52,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:45:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:52,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:52,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:52,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:52,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:45:52,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:52,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:52,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:45:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:52,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:52,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:52,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:52,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:45:52,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:45:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:45:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:52,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:45:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:52,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:52,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:52,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 06:45:52,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:45:52,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-27 06:45:52,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 06:45:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:45:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 06:45:52,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:53,852 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-27 06:45:54,106 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-10-27 06:45:54,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 06:45:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:45:54,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:45:54,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:45:54,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:45:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:45:54,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:45:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:45:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:45:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:45:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:45:54,141 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 06:45:54,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589411671] [2020-10-27 06:45:54,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:45:54,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 06:45:54,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244962941] [2020-10-27 06:45:54,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 06:45:54,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:45:54,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 06:45:54,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2020-10-27 06:45:54,143 INFO L87 Difference]: Start difference. First operand 107 states and 126 transitions. Second operand 28 states. [2020-10-27 06:45:55,294 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-27 06:45:55,540 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-27 06:45:55,835 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 06:45:56,383 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-27 06:45:57,269 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-27 06:45:57,517 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-10-27 06:45:58,092 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-10-27 06:45:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:45:59,876 INFO L93 Difference]: Finished difference Result 153 states and 185 transitions. [2020-10-27 06:45:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 06:45:59,877 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 67 [2020-10-27 06:45:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:45:59,879 INFO L225 Difference]: With dead ends: 153 [2020-10-27 06:45:59,879 INFO L226 Difference]: Without dead ends: 138 [2020-10-27 06:45:59,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 06:45:59,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-27 06:45:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 122. [2020-10-27 06:45:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-27 06:45:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2020-10-27 06:45:59,901 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 67 [2020-10-27 06:45:59,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:45:59,902 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2020-10-27 06:45:59,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 06:45:59,902 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2020-10-27 06:45:59,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 06:45:59,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:45:59,903 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:59,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 06:45:59,903 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:45:59,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:45:59,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2007349822, now seen corresponding path program 1 times [2020-10-27 06:45:59,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:45:59,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904882298] [2020-10-27 06:45:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:45:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:45:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 06:46:00,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-27 06:46:00,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 06:46:00,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 06:46:00,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 06:46:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:46:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:00,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:46:00,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:00,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:00,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:00,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:46:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:00,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:00,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:00,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:46:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:46:00,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:46:00,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:46:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:00,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:00,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:00,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:00,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:46:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:00,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:00,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:00,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:46:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:46:00,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:46:00,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:46:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:46:00,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 06:46:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:00,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:00,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:00,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 06:46:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:00,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:00,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:00,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:00,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 06:46:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:00,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:00,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:00,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:00,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:00,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 06:46:00,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904882298] [2020-10-27 06:46:00,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:46:00,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 06:46:00,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000261988] [2020-10-27 06:46:00,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 06:46:00,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:46:00,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 06:46:00,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 06:46:00,520 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand 12 states. [2020-10-27 06:46:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:46:01,550 INFO L93 Difference]: Finished difference Result 168 states and 205 transitions. [2020-10-27 06:46:01,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 06:46:01,551 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-27 06:46:01,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:46:01,553 INFO L225 Difference]: With dead ends: 168 [2020-10-27 06:46:01,553 INFO L226 Difference]: Without dead ends: 165 [2020-10-27 06:46:01,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:46:01,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-27 06:46:01,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2020-10-27 06:46:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-27 06:46:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 196 transitions. [2020-10-27 06:46:01,578 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 196 transitions. Word has length 71 [2020-10-27 06:46:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:46:01,579 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 196 transitions. [2020-10-27 06:46:01,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 06:46:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 196 transitions. [2020-10-27 06:46:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 06:46:01,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:46:01,580 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:01,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 06:46:01,580 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:46:01,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:46:01,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1084951590, now seen corresponding path program 4 times [2020-10-27 06:46:01,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:46:01,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973127920] [2020-10-27 06:46:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:46:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:04,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:06,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:06,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:06,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 06:46:06,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 06:46:06,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-27 06:46:06,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 06:46:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 06:46:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 06:46:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:06,856 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 16 [2020-10-27 06:46:06,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:46:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:06,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:06,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:06,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:06,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:46:06,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:06,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:06,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:06,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:06,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:06,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:06,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:06,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:06,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:46:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:06,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:06,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:06,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:06,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:06,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:46:06,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:46:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:06,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:06,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:46:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:06,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:06,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:06,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:46:06,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:06,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 06:46:06,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:46:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:46:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 06:46:06,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:07,313 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 29 [2020-10-27 06:46:07,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:46:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:07,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:07,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:07,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:07,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:07,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:07,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:07,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:07,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:07,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:07,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:07,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:07,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:07,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:46:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:07,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:07,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:07,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:07,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:07,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:07,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:07,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:46:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:07,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:08,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:08,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:08,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:10,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 06:46:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:46:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2771 [2020-10-27 06:46:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 06:46:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:46:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:46:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:10,563 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2020-10-27 06:46:11,888 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2020-10-27 06:46:13,802 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 143 DAG size of output: 93 [2020-10-27 06:46:15,125 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 139 DAG size of output: 67 [2020-10-27 06:46:16,233 WARN L193 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 66 [2020-10-27 06:46:17,218 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 61 [2020-10-27 06:46:18,497 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 64 [2020-10-27 06:46:19,011 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 32 [2020-10-27 06:46:19,384 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-27 06:46:19,753 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-27 06:46:20,092 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 19 [2020-10-27 06:46:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-27 06:46:20,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973127920] [2020-10-27 06:46:20,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:46:20,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 06:46:20,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540033575] [2020-10-27 06:46:20,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 06:46:20,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:46:20,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 06:46:20,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:46:20,132 INFO L87 Difference]: Start difference. First operand 159 states and 196 transitions. Second operand 22 states. [2020-10-27 06:46:21,685 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2020-10-27 06:46:22,203 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2020-10-27 06:46:22,681 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 105 [2020-10-27 06:46:23,626 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 114 [2020-10-27 06:46:24,038 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 64 [2020-10-27 06:46:25,028 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 106 [2020-10-27 06:46:25,958 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 135 [2020-10-27 06:46:27,319 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 182 DAG size of output: 149 [2020-10-27 06:46:27,842 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 93 [2020-10-27 06:46:28,783 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 129 [2020-10-27 06:46:30,526 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 168 DAG size of output: 134 [2020-10-27 06:46:34,451 WARN L193 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 162 DAG size of output: 117 [2020-10-27 06:46:36,275 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 171 DAG size of output: 154 [2020-10-27 06:46:37,143 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 116 [2020-10-27 06:46:39,473 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 192 DAG size of output: 143 [2020-10-27 06:46:42,008 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 57 [2020-10-27 06:46:44,738 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 161 DAG size of output: 137 [2020-10-27 06:46:46,075 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 153 DAG size of output: 136 [2020-10-27 06:46:46,644 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 73 [2020-10-27 06:46:47,074 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 59 [2020-10-27 06:46:47,570 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 71 [2020-10-27 06:46:49,307 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 228 DAG size of output: 123 [2020-10-27 06:46:50,697 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 197 DAG size of output: 118 [2020-10-27 06:46:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:46:51,584 INFO L93 Difference]: Finished difference Result 239 states and 298 transitions. [2020-10-27 06:46:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 06:46:51,585 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 68 [2020-10-27 06:46:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:46:51,586 INFO L225 Difference]: With dead ends: 239 [2020-10-27 06:46:51,587 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 06:46:51,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=540, Invalid=2009, Unknown=1, NotChecked=0, Total=2550 [2020-10-27 06:46:51,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 06:46:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2020-10-27 06:46:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-27 06:46:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 202 transitions. [2020-10-27 06:46:51,615 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 202 transitions. Word has length 68 [2020-10-27 06:46:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:46:51,616 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 202 transitions. [2020-10-27 06:46:51,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 06:46:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 202 transitions. [2020-10-27 06:46:51,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 06:46:51,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:46:51,617 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:46:51,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 06:46:51,618 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:46:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:46:51,618 INFO L82 PathProgramCache]: Analyzing trace with hash 562505944, now seen corresponding path program 2 times [2020-10-27 06:46:51,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:46:51,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096220107] [2020-10-27 06:46:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:46:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:51,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:56,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:56,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 06:46:56,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:46:56,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 06:46:56,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 06:46:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 06:46:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 06:46:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:58,221 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 146 DAG size of output: 70 [2020-10-27 06:46:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:46:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:58,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:58,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:58,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:58,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:46:58,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:58,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:58,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:58,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:58,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:58,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 06:46:58,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:58,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:58,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:58,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:46:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:58,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:58,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:58,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:46:58,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:46:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:58,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:46:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:58,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:58,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:58,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:46:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-27 06:46:58,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 06:46:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:46:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 06:46:58,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:00,678 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 24 [2020-10-27 06:47:00,891 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 23 [2020-10-27 06:47:56,554 WARN L193 SmtUtils]: Spent 54.74 s on a formula simplification. DAG size of input: 1557 DAG size of output: 132