/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/nr2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:53:15,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:53:15,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:53:15,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:53:15,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:53:15,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:53:15,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:53:15,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:53:15,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:53:15,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:53:15,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:53:15,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:53:15,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:53:15,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:53:15,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:53:15,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:53:15,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:53:15,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:53:15,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:53:15,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:53:15,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:53:15,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:53:15,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:53:15,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:53:15,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:53:15,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:53:15,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:53:15,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:53:15,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:53:15,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:53:15,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:53:15,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:53:15,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:53:15,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:53:15,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:53:15,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:53:15,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:53:15,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:53:15,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:53:15,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:53:15,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:53:15,961 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 14:53:15,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:53:15,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:53:15,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:53:15,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:53:15,997 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:53:15,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:53:15,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:53:15,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:53:15,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:53:15,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:53:15,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:53:15,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:53:15,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:53:15,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:53:15,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:53:15,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:53:15,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:53:15,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:53:16,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:53:16,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:53:16,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:53:16,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:53:16,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:53:16,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:53:16,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:53:16,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:53:16,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:53:16,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:53:16,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:53:16,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:53:16,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:53:16,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:53:16,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:53:16,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:53:16,488 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:53:16,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr2.c [2020-10-27 14:53:16,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eada2277c/5385ba7625014f69ba38105c5081cb68/FLAG6afc10d4a [2020-10-27 14:53:17,379 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:53:17,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/nr2.c [2020-10-27 14:53:17,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eada2277c/5385ba7625014f69ba38105c5081cb68/FLAG6afc10d4a [2020-10-27 14:53:17,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eada2277c/5385ba7625014f69ba38105c5081cb68 [2020-10-27 14:53:17,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:53:17,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:53:17,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:53:17,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:53:17,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:53:17,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:53:17" (1/1) ... [2020-10-27 14:53:17,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb0b7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:17, skipping insertion in model container [2020-10-27 14:53:17,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:53:17" (1/1) ... [2020-10-27 14:53:17,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:53:17,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:53:17,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:53:17,977 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:53:18,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:53:18,022 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:53:18,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:18 WrapperNode [2020-10-27 14:53:18,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:53:18,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:53:18,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:53:18,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:53:18,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:18" (1/1) ... [2020-10-27 14:53:18,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:18" (1/1) ... [2020-10-27 14:53:18,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:18" (1/1) ... [2020-10-27 14:53:18,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:18" (1/1) ... [2020-10-27 14:53:18,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:18" (1/1) ... [2020-10-27 14:53:18,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:18" (1/1) ... [2020-10-27 14:53:18,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:18" (1/1) ... [2020-10-27 14:53:18,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:53:18,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:53:18,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:53:18,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:53:18,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:18" (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 14:53:18,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:53:18,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:53:18,166 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:53:18,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:53:18,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:53:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:53:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:53:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:53:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:53:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:53:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:53:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:53:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:53:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:53:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:53:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:53:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:53:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:53:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:53:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:53:18,767 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:53:18,768 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:53:18,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:53:18 BoogieIcfgContainer [2020-10-27 14:53:18,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:53:18,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:53:18,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:53:18,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:53:18,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:53:17" (1/3) ... [2020-10-27 14:53:18,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c50d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:53:18, skipping insertion in model container [2020-10-27 14:53:18,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:18" (2/3) ... [2020-10-27 14:53:18,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c50d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:53:18, skipping insertion in model container [2020-10-27 14:53:18,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:53:18" (3/3) ... [2020-10-27 14:53:18,786 INFO L111 eAbstractionObserver]: Analyzing ICFG nr2.c [2020-10-27 14:53:18,801 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:53:18,808 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:53:18,824 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:53:18,870 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:53:18,870 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:53:18,870 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:53:18,870 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:53:18,871 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:53:18,871 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:53:18,871 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:53:18,871 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:53:18,894 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-27 14:53:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:53:18,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:18,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:18,905 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:18,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:18,916 INFO L82 PathProgramCache]: Analyzing trace with hash -71068241, now seen corresponding path program 1 times [2020-10-27 14:53:18,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:18,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565041667] [2020-10-27 14:53:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:19,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:19,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:53:19,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:53:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-27 14:53:19,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:19,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:53:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:19,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:53:19,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:19,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:19,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:19,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 14:53:19,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:19,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:19,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:19,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:53:19,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:53:19,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:53:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:19,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:19,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565041667] [2020-10-27 14:53:19,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:53:19,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:53:19,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349073934] [2020-10-27 14:53:19,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:53:19,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:19,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:53:19,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:53:19,582 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-27 14:53:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:19,731 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2020-10-27 14:53:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:53:19,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-27 14:53:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:19,741 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:53:19,741 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 14:53:19,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:53:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 14:53:19,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-27 14:53:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 14:53:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-27 14:53:19,789 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-27 14:53:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:19,790 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-27 14:53:19,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:53:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-27 14:53:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:53:19,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:19,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:19,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:53:19,792 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:19,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:19,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2036094566, now seen corresponding path program 1 times [2020-10-27 14:53:19,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:19,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4163743] [2020-10-27 14:53:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:19,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:20,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:53:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:53:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-27 14:53:20,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:53:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:53:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:53:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:20,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:20,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:20,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:20,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:53:20,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:20,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:20,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:20,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:20,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:20,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 14:53:20,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:53:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:53:20,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:20,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4163743] [2020-10-27 14:53:20,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:53:20,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 14:53:20,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624339450] [2020-10-27 14:53:20,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:53:20,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:20,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:53:20,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:53:20,867 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 9 states. [2020-10-27 14:53:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:21,393 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 14:53:21,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:53:21,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-27 14:53:21,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:21,397 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:53:21,397 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:53:21,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:53:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:53:21,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-27 14:53:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:53:21,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:53:21,427 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 23 [2020-10-27 14:53:21,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:21,427 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:53:21,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:53:21,428 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:53:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 14:53:21,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:21,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:21,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:53:21,431 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:21,432 INFO L82 PathProgramCache]: Analyzing trace with hash -640613893, now seen corresponding path program 1 times [2020-10-27 14:53:21,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:21,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59173858] [2020-10-27 14:53:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:21,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:53:21,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 14:53:21,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:53:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:53:21,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:21,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:21,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:21,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:21,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:21,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:21,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:53:21,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:21,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:21,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:21,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:21,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:21,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:53:21,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:53:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:21,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59173858] [2020-10-27 14:53:21,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:53:21,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:53:21,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868329251] [2020-10-27 14:53:21,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:53:21,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:21,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:53:21,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:53:21,668 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-27 14:53:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:21,798 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-27 14:53:21,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:53:21,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 14:53:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:21,801 INFO L225 Difference]: With dead ends: 54 [2020-10-27 14:53:21,801 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:53:21,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:53:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:53:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 14:53:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:53:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 14:53:21,824 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 26 [2020-10-27 14:53:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:21,824 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 14:53:21,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:53:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 14:53:21,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 14:53:21,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:21,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:21,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:53:21,828 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:21,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:21,829 INFO L82 PathProgramCache]: Analyzing trace with hash 113037761, now seen corresponding path program 1 times [2020-10-27 14:53:21,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:21,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709647428] [2020-10-27 14:53:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:21,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:22,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:22,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 14:53:22,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:53:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-27 14:53:22,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:53:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:53:22,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:53:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:22,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:22,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:22,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:22,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:53:22,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:22,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:22,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:22,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:22,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:22,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:22,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:22,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:22,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:22,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:22,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:22,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:22,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709647428] [2020-10-27 14:53:22,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:22,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:53:22,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311703569] [2020-10-27 14:53:22,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:53:22,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:22,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:53:22,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:53:22,374 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-10-27 14:53:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:22,491 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 14:53:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:53:22,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-27 14:53:22,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:22,493 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:53:22,493 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 14:53:22,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:53:22,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 14:53:22,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-27 14:53:22,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:53:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-27 14:53:22,503 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2020-10-27 14:53:22,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:22,503 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-27 14:53:22,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:53:22,504 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-27 14:53:22,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:53:22,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:22,505 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:53:22,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:53:22,505 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:22,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:22,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1939561413, now seen corresponding path program 2 times [2020-10-27 14:53:22,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:22,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492050957] [2020-10-27 14:53:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:22,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:22,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:23,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:23,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:53:23,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:53:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1186 [2020-10-27 14:53:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:53:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:53:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:53:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:23,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:23,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:23,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:53:23,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:23,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:23,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:23,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:23,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:23,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:23,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:53:23,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:23,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:23,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492050957] [2020-10-27 14:53:23,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:23,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:53:23,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649025062] [2020-10-27 14:53:24,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:53:24,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:24,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:53:24,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:53:24,002 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 12 states. [2020-10-27 14:53:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:25,219 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions. [2020-10-27 14:53:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:53:25,220 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-27 14:53:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:25,223 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:53:25,223 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:53:25,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:53:25,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:53:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 56. [2020-10-27 14:53:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:53:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-10-27 14:53:25,240 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 32 [2020-10-27 14:53:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:25,241 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-10-27 14:53:25,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:53:25,241 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-10-27 14:53:25,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:53:25,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:25,243 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:53:25,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:53:25,243 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:25,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:25,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1996819715, now seen corresponding path program 1 times [2020-10-27 14:53:25,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:25,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646181965] [2020-10-27 14:53:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:27,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:27,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:53:27,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:53:27,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1799 [2020-10-27 14:53:27,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:53:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 14:53:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:27,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:53:27,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:27,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:27,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:27,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:27,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:27,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:53:27,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:53:27,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:27,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:27,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:27,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:27,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:27,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:53:27,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:27,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:27,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:53:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:53:27,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646181965] [2020-10-27 14:53:27,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:53:27,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:53:27,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916446507] [2020-10-27 14:53:27,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:53:27,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:27,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:53:27,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:53:27,189 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 6 states. [2020-10-27 14:53:27,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:27,447 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-10-27 14:53:27,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:53:27,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-27 14:53:27,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:27,449 INFO L225 Difference]: With dead ends: 65 [2020-10-27 14:53:27,450 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 14:53:27,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:53:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 14:53:27,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-27 14:53:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 14:53:27,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-10-27 14:53:27,480 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 32 [2020-10-27 14:53:27,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:27,482 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-10-27 14:53:27,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:53:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-10-27 14:53:27,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:53:27,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:27,484 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:53:27,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:53:27,484 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:27,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:27,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1768599869, now seen corresponding path program 1 times [2020-10-27 14:53:27,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:27,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377885303] [2020-10-27 14:53:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:27,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:28,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:28,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:53:28,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:53:28,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-27 14:53:28,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:28,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:53:28,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:53:28,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:53:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:28,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:28,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:28,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:28,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:53:28,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:28,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:28,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:28,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:28,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:28,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:28,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:28,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:28,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377885303] [2020-10-27 14:53:28,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:28,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:53:28,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129593186] [2020-10-27 14:53:28,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:53:28,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:28,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:53:28,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:53:28,577 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 9 states. [2020-10-27 14:53:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:29,019 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2020-10-27 14:53:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:53:29,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-27 14:53:29,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:29,022 INFO L225 Difference]: With dead ends: 116 [2020-10-27 14:53:29,022 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 14:53:29,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:53:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 14:53:29,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 68. [2020-10-27 14:53:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:53:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2020-10-27 14:53:29,041 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 32 [2020-10-27 14:53:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:29,042 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2020-10-27 14:53:29,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:53:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2020-10-27 14:53:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:53:29,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:29,044 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:53:29,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:53:29,044 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:29,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1334337529, now seen corresponding path program 2 times [2020-10-27 14:53:29,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:29,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280732341] [2020-10-27 14:53:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:29,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:29,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:30,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:30,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:53:30,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:53:30,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1522 [2020-10-27 14:53:30,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:30,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:53:30,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:53:30,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:53:30,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:30,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:30,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:30,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:30,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:53:30,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:30,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:30,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:30,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:30,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:30,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:30,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280732341] [2020-10-27 14:53:30,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:53:30,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:53:30,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466258005] [2020-10-27 14:53:30,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:53:30,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:30,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:53:30,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:53:30,664 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 5 states. [2020-10-27 14:53:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:30,785 INFO L93 Difference]: Finished difference Result 136 states and 172 transitions. [2020-10-27 14:53:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:53:30,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-27 14:53:30,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:30,789 INFO L225 Difference]: With dead ends: 136 [2020-10-27 14:53:30,789 INFO L226 Difference]: Without dead ends: 87 [2020-10-27 14:53:30,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:53:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-27 14:53:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 66. [2020-10-27 14:53:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 14:53:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-10-27 14:53:30,822 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 32 [2020-10-27 14:53:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:30,822 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-10-27 14:53:30,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:53:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-10-27 14:53:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:53:30,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:30,829 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:53:30,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:53:30,830 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:30,832 INFO L82 PathProgramCache]: Analyzing trace with hash 747531515, now seen corresponding path program 1 times [2020-10-27 14:53:30,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:30,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080826615] [2020-10-27 14:53:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:30,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:30,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:31,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:31,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:53:31,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:53:31,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-10-27 14:53:31,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:53:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:53:31,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 14:53:31,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:31,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:31,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:31,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:31,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:31,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:53:31,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:31,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:31,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:31,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:31,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:31,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:31,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:31,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:53:31,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:31,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080826615] [2020-10-27 14:53:31,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:31,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:53:31,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706658000] [2020-10-27 14:53:31,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:53:31,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:31,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:53:31,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:53:31,845 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 13 states. [2020-10-27 14:53:33,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:33,237 INFO L93 Difference]: Finished difference Result 158 states and 198 transitions. [2020-10-27 14:53:33,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:53:33,238 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-27 14:53:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:33,239 INFO L225 Difference]: With dead ends: 158 [2020-10-27 14:53:33,240 INFO L226 Difference]: Without dead ends: 155 [2020-10-27 14:53:33,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=1001, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:53:33,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-27 14:53:33,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 78. [2020-10-27 14:53:33,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 14:53:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2020-10-27 14:53:33,258 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 32 [2020-10-27 14:53:33,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:33,258 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2020-10-27 14:53:33,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:53:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2020-10-27 14:53:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:53:33,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:33,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:33,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:53:33,260 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:33,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:33,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1447839543, now seen corresponding path program 1 times [2020-10-27 14:53:33,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:33,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189056806] [2020-10-27 14:53:33,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:33,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:33,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:34,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:34,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 14:53:34,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:53:34,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-10-27 14:53:34,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:34,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:53:34,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:53:34,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 14:53:34,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:34,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:34,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:34,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:34,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:34,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:53:34,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:34,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:34,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:34,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:53:34,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:34,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:34,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:53:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:34,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:34,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:34,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:34,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:34,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:53:34,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:53:34,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189056806] [2020-10-27 14:53:34,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:34,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:53:34,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042940168] [2020-10-27 14:53:34,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:53:34,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:34,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:53:34,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:53:34,976 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand 11 states. [2020-10-27 14:53:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:35,906 INFO L93 Difference]: Finished difference Result 159 states and 198 transitions. [2020-10-27 14:53:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:53:35,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-27 14:53:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:35,909 INFO L225 Difference]: With dead ends: 159 [2020-10-27 14:53:35,909 INFO L226 Difference]: Without dead ends: 142 [2020-10-27 14:53:35,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:53:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-27 14:53:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 93. [2020-10-27 14:53:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 14:53:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 114 transitions. [2020-10-27 14:53:35,928 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 114 transitions. Word has length 41 [2020-10-27 14:53:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:35,928 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 114 transitions. [2020-10-27 14:53:35,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:53:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 114 transitions. [2020-10-27 14:53:35,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:53:35,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:35,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:35,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:53:35,931 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:35,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:35,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1228984825, now seen corresponding path program 1 times [2020-10-27 14:53:35,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:35,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79121131] [2020-10-27 14:53:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:35,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:36,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:36,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:37,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:38,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:38,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 14:53:38,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:53:38,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2705 [2020-10-27 14:53:38,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:38,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:53:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:53:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:53:38,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:38,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:38,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:38,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:38,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:38,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:53:38,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:38,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:38,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:38,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:38,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:53:38,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:38,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:38,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:53:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:38,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:38,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:38,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:38,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:38,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:38,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:38,887 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:53:38,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79121131] [2020-10-27 14:53:38,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:38,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:53:38,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994102748] [2020-10-27 14:53:38,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:53:38,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:38,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:53:38,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:53:38,890 INFO L87 Difference]: Start difference. First operand 93 states and 114 transitions. Second operand 13 states. [2020-10-27 14:53:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:39,871 INFO L93 Difference]: Finished difference Result 151 states and 185 transitions. [2020-10-27 14:53:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:53:39,872 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-27 14:53:39,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:39,874 INFO L225 Difference]: With dead ends: 151 [2020-10-27 14:53:39,877 INFO L226 Difference]: Without dead ends: 148 [2020-10-27 14:53:39,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:53:39,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-27 14:53:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2020-10-27 14:53:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 14:53:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2020-10-27 14:53:39,911 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 41 [2020-10-27 14:53:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:39,912 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2020-10-27 14:53:39,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:53:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2020-10-27 14:53:39,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:53:39,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:39,915 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:39,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:53:39,915 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:39,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1857625594, now seen corresponding path program 3 times [2020-10-27 14:53:39,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:39,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005278604] [2020-10-27 14:53:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:39,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:39,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:39,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:41,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:42,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:44,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:44,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:53:44,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 14:53:44,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4685 [2020-10-27 14:53:44,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:53:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 14:53:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:53:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:44,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:44,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:44,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:44,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:44,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:53:44,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:44,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:44,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:44,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:44,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:44,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:44,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:44,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:44,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:53:44,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005278604] [2020-10-27 14:53:44,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:44,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:53:44,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854614976] [2020-10-27 14:53:44,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:53:44,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:44,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:53:44,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:53:44,752 INFO L87 Difference]: Start difference. First operand 125 states and 153 transitions. Second operand 7 states. [2020-10-27 14:53:44,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:44,916 INFO L93 Difference]: Finished difference Result 193 states and 236 transitions. [2020-10-27 14:53:44,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:53:44,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-27 14:53:44,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:44,919 INFO L225 Difference]: With dead ends: 193 [2020-10-27 14:53:44,919 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 14:53:44,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:53:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 14:53:44,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2020-10-27 14:53:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-27 14:53:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2020-10-27 14:53:44,944 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 41 [2020-10-27 14:53:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:44,944 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2020-10-27 14:53:44,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:53:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2020-10-27 14:53:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:53:44,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:44,945 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:53:44,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:53:44,946 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:44,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:44,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1270819580, now seen corresponding path program 4 times [2020-10-27 14:53:44,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:44,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561564961] [2020-10-27 14:53:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:44,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:44,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:44,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:45,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:45,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:46,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:46,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:53:46,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:53:46,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-27 14:53:46,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:53:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:53:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:53:46,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:46,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:46,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:46,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:46,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:53:46,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:46,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:46,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:46,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:46,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:46,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:46,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:46,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:46,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:46,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:46,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:46,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:53:46,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561564961] [2020-10-27 14:53:46,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:46,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:53:46,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849053036] [2020-10-27 14:53:46,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:53:46,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:46,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:53:46,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:53:46,225 INFO L87 Difference]: Start difference. First operand 95 states and 112 transitions. Second operand 9 states. [2020-10-27 14:53:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:46,509 INFO L93 Difference]: Finished difference Result 160 states and 193 transitions. [2020-10-27 14:53:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:53:46,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-27 14:53:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:46,511 INFO L225 Difference]: With dead ends: 160 [2020-10-27 14:53:46,511 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 14:53:46,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:53:46,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 14:53:46,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-27 14:53:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 14:53:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2020-10-27 14:53:46,533 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 41 [2020-10-27 14:53:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:46,533 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2020-10-27 14:53:46,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:53:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2020-10-27 14:53:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 14:53:46,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:46,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:46,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:53:46,535 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:46,535 INFO L82 PathProgramCache]: Analyzing trace with hash 811616511, now seen corresponding path program 2 times [2020-10-27 14:53:46,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:46,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632529431] [2020-10-27 14:53:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:46,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:53:47,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:53:47,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-27 14:53:47,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:53:47,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:53:47,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 14:53:47,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:47,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:47,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:47,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:47,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:53:47,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:53:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:53:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:53:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:47,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:47,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:47,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:47,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:47,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:47,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:47,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:53:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:47,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:47,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:47,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:47,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 14:53:47,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632529431] [2020-10-27 14:53:47,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:47,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:53:47,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896387209] [2020-10-27 14:53:47,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:53:47,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:47,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:53:47,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:53:47,352 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand 12 states. [2020-10-27 14:53:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:48,149 INFO L93 Difference]: Finished difference Result 196 states and 229 transitions. [2020-10-27 14:53:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:53:48,150 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-27 14:53:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:48,152 INFO L225 Difference]: With dead ends: 196 [2020-10-27 14:53:48,152 INFO L226 Difference]: Without dead ends: 150 [2020-10-27 14:53:48,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:53:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-27 14:53:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 115. [2020-10-27 14:53:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-27 14:53:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2020-10-27 14:53:48,173 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 50 [2020-10-27 14:53:48,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:48,173 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2020-10-27 14:53:48,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:53:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2020-10-27 14:53:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 14:53:48,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:48,174 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:48,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:53:48,174 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:48,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:48,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1309756694, now seen corresponding path program 3 times [2020-10-27 14:53:48,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:48,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808983302] [2020-10-27 14:53:48,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:48,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:48,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:48,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:49,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:50,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:50,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:50,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:50,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:51,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:51,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:52,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:52,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:53,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:53,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:53:53,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-27 14:53:53,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:53:53,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:53:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:53:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 14:53:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:53,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:53,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:53,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:53,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:53:53,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:53,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:53,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:53,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:53,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:53,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:53,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:53,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:53,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:53:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:53,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:53,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:53,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:53,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:53,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:53,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:53,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:53,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:53,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:53,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808983302] [2020-10-27 14:53:53,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:53,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:53:53,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614970890] [2020-10-27 14:53:53,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:53:53,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:53,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:53:53,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:53:53,636 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand 16 states. [2020-10-27 14:53:54,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:54,662 INFO L93 Difference]: Finished difference Result 174 states and 209 transitions. [2020-10-27 14:53:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:53:54,665 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-27 14:53:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:54,669 INFO L225 Difference]: With dead ends: 174 [2020-10-27 14:53:54,670 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 14:53:54,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:53:54,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 14:53:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-27 14:53:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:53:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-10-27 14:53:54,698 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 50 [2020-10-27 14:53:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:54,699 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-10-27 14:53:54,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:53:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-10-27 14:53:54,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:53:54,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:54,700 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:54,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:53:54,700 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:54,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:54,701 INFO L82 PathProgramCache]: Analyzing trace with hash -712731780, now seen corresponding path program 4 times [2020-10-27 14:53:54,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:54,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061592278] [2020-10-27 14:53:54,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:54,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:54,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:54,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:55,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:55,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:57,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:58,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:59,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:59,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:59,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:59,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:59,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:53:59,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-27 14:53:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 14:53:59,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:53:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:53:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 14:53:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:54:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:00,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:00,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:00,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:00,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:00,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:00,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:00,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:00,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:00,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:54:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:00,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:00,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:00,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:00,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:00,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:54:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:00,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:00,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:00,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:00,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:00,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:54:00,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:00,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:00,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:00,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:54:00,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061592278] [2020-10-27 14:54:00,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:00,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:54:00,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958918085] [2020-10-27 14:54:00,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:54:00,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:00,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:54:00,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:54:00,091 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 15 states. [2020-10-27 14:54:01,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:01,306 INFO L93 Difference]: Finished difference Result 182 states and 215 transitions. [2020-10-27 14:54:01,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:54:01,307 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-27 14:54:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:01,309 INFO L225 Difference]: With dead ends: 182 [2020-10-27 14:54:01,309 INFO L226 Difference]: Without dead ends: 165 [2020-10-27 14:54:01,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:54:01,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-27 14:54:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 145. [2020-10-27 14:54:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 14:54:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-10-27 14:54:01,351 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 59 [2020-10-27 14:54:01,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:01,351 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-10-27 14:54:01,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:54:01,352 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-10-27 14:54:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:54:01,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:01,353 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:01,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:54:01,353 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:01,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:01,354 INFO L82 PathProgramCache]: Analyzing trace with hash 306845434, now seen corresponding path program 1 times [2020-10-27 14:54:01,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:01,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964957786] [2020-10-27 14:54:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:01,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:01,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:01,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:03,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:03,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:54:03,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:54:03,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1646 [2020-10-27 14:54:03,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:54:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:54:03,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:03,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:03,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:03,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:03,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:03,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:03,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:03,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:03,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:03,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:03,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:03,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:03,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:03,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:54:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:03,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:03,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:03,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:03,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:03,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:03,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:03,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:54:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:03,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:03,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:03,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:03,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:03,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:03,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 14:54:03,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964957786] [2020-10-27 14:54:03,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:03,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:54:03,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106827686] [2020-10-27 14:54:03,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:54:03,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:03,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:54:03,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:54:03,279 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 13 states. [2020-10-27 14:54:04,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:04,228 INFO L93 Difference]: Finished difference Result 218 states and 263 transitions. [2020-10-27 14:54:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:54:04,228 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-27 14:54:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:04,230 INFO L225 Difference]: With dead ends: 218 [2020-10-27 14:54:04,231 INFO L226 Difference]: Without dead ends: 215 [2020-10-27 14:54:04,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:54:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-27 14:54:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 178. [2020-10-27 14:54:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-27 14:54:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 214 transitions. [2020-10-27 14:54:04,267 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 214 transitions. Word has length 59 [2020-10-27 14:54:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:04,267 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 214 transitions. [2020-10-27 14:54:04,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:54:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 214 transitions. [2020-10-27 14:54:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:54:04,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:04,269 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:04,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:54:04,269 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:04,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1460862311, now seen corresponding path program 5 times [2020-10-27 14:54:04,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:04,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609098605] [2020-10-27 14:54:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:04,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:05,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:05,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:06,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:07,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:07,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:07,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:09,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:09,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 14:54:09,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-27 14:54:09,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:54:09,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:54:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:54:09,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:10,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:10,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:10,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:10,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:10,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:10,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:10,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:10,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:10,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:10,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:10,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:54:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:10,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:10,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:10,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:10,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:10,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:10,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:10,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:54:10,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609098605] [2020-10-27 14:54:10,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:10,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:54:10,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482579493] [2020-10-27 14:54:10,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:54:10,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:10,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:54:10,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:54:10,148 INFO L87 Difference]: Start difference. First operand 178 states and 214 transitions. Second operand 20 states. [2020-10-27 14:54:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:12,409 INFO L93 Difference]: Finished difference Result 291 states and 357 transitions. [2020-10-27 14:54:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:54:12,410 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 59 [2020-10-27 14:54:12,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:12,414 INFO L225 Difference]: With dead ends: 291 [2020-10-27 14:54:12,414 INFO L226 Difference]: Without dead ends: 288 [2020-10-27 14:54:12,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=352, Invalid=1810, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 14:54:12,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-27 14:54:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 218. [2020-10-27 14:54:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-27 14:54:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 263 transitions. [2020-10-27 14:54:12,477 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 263 transitions. Word has length 59 [2020-10-27 14:54:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:12,477 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 263 transitions. [2020-10-27 14:54:12,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:54:12,478 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 263 transitions. [2020-10-27 14:54:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 14:54:12,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:12,484 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:12,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:54:12,484 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash -894016856, now seen corresponding path program 6 times [2020-10-27 14:54:12,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:12,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515280034] [2020-10-27 14:54:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:16,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:16,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:17,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:17,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:17,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 14:54:17,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-27 14:54:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 14:54:17,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:54:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 14:54:17,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:18,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:18,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:18,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:18,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:18,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:18,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:18,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:18,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:18,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:18,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:18,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:18,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:18,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:54:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:18,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:18,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:18,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:18,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:18,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:18,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:18,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:54:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:18,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:18,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:18,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:18,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:18,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:18,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:18,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:18,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:54:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:18,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:18,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:18,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:18,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:54:18,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515280034] [2020-10-27 14:54:18,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:18,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:54:18,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921342244] [2020-10-27 14:54:18,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:54:18,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:18,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:54:18,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:54:18,506 INFO L87 Difference]: Start difference. First operand 218 states and 263 transitions. Second operand 23 states. [2020-10-27 14:54:19,731 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-27 14:54:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:22,145 INFO L93 Difference]: Finished difference Result 271 states and 327 transitions. [2020-10-27 14:54:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:54:22,147 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 68 [2020-10-27 14:54:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:22,149 INFO L225 Difference]: With dead ends: 271 [2020-10-27 14:54:22,149 INFO L226 Difference]: Without dead ends: 268 [2020-10-27 14:54:22,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=260, Invalid=2290, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 14:54:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-27 14:54:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 229. [2020-10-27 14:54:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-27 14:54:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 277 transitions. [2020-10-27 14:54:22,212 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 277 transitions. Word has length 68 [2020-10-27 14:54:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:22,212 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 277 transitions. [2020-10-27 14:54:22,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:54:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 277 transitions. [2020-10-27 14:54:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 14:54:22,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:22,214 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:22,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:54:22,214 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:22,214 INFO L82 PathProgramCache]: Analyzing trace with hash -760003350, now seen corresponding path program 7 times [2020-10-27 14:54:22,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:22,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190937633] [2020-10-27 14:54:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:27,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 14:54:27,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-27 14:54:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:54:27,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:54:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:54:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:27,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:27,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:27,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:27,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:27,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:27,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:27,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:27,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:27,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:27,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:27,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:27,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:54:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:27,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:27,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:27,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:27,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:27,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:54:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:27,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:27,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:27,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:27,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:54:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:27,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:27,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:54:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:27,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:27,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:27,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:27,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:27,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:27,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:54:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 14:54:27,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190937633] [2020-10-27 14:54:27,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:27,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:54:27,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118869677] [2020-10-27 14:54:27,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:54:27,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:27,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:54:27,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:54:27,608 INFO L87 Difference]: Start difference. First operand 229 states and 277 transitions. Second operand 14 states. [2020-10-27 14:54:28,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:28,573 INFO L93 Difference]: Finished difference Result 307 states and 375 transitions. [2020-10-27 14:54:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:54:28,574 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-27 14:54:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:28,577 INFO L225 Difference]: With dead ends: 307 [2020-10-27 14:54:28,578 INFO L226 Difference]: Without dead ends: 275 [2020-10-27 14:54:28,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:54:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-27 14:54:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 233. [2020-10-27 14:54:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-27 14:54:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 276 transitions. [2020-10-27 14:54:28,632 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 276 transitions. Word has length 68 [2020-10-27 14:54:28,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:28,632 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 276 transitions. [2020-10-27 14:54:28,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:54:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 276 transitions. [2020-10-27 14:54:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 14:54:28,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:28,635 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:28,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:54:28,635 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:28,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1791410134, now seen corresponding path program 8 times [2020-10-27 14:54:28,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:28,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991436101] [2020-10-27 14:54:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:29,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:29,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:30,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:33,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 14:54:33,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 14:54:33,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:54:33,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:54:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:54:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:54:33,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:33,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:33,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:33,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:33,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:33,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:33,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:33,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:33,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:33,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:33,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:54:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:33,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:33,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:33,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:33,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:33,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:33,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:33,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:54:33,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:33,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:33,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:54:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:33,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:33,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:33,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:33,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:54:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:54:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:33,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:33,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:33,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:33,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:54:33,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:54:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:33,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:54:33,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991436101] [2020-10-27 14:54:33,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:33,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:54:33,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642552099] [2020-10-27 14:54:33,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:54:33,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:33,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:54:33,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:54:33,787 INFO L87 Difference]: Start difference. First operand 233 states and 276 transitions. Second operand 9 states. [2020-10-27 14:54:34,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:34,027 INFO L93 Difference]: Finished difference Result 267 states and 312 transitions. [2020-10-27 14:54:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:54:34,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-27 14:54:34,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:34,029 INFO L225 Difference]: With dead ends: 267 [2020-10-27 14:54:34,029 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 14:54:34,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:54:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 14:54:34,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-10-27 14:54:34,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-27 14:54:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2020-10-27 14:54:34,047 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 68 [2020-10-27 14:54:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:34,047 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2020-10-27 14:54:34,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:54:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2020-10-27 14:54:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 14:54:34,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:34,049 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:34,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:54:34,049 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:34,050 INFO L82 PathProgramCache]: Analyzing trace with hash 997180831, now seen corresponding path program 9 times [2020-10-27 14:54:34,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:34,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693796647] [2020-10-27 14:54:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:35,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:35,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:35,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:39,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:54:39,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 35 [2020-10-27 14:54:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:54:39,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:54:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:54:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:39,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:39,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:39,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:39,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:39,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:39,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:39,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:39,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:39,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:54:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:39,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:39,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:39,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:39,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:39,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:39,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:39,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:54:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:39,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:39,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:39,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:39,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:39,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 82 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:54:39,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693796647] [2020-10-27 14:54:39,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:39,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:54:39,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952934501] [2020-10-27 14:54:39,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:54:39,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:39,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:54:39,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:54:39,670 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand 19 states. [2020-10-27 14:54:40,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:40,968 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2020-10-27 14:54:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:54:40,972 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 68 [2020-10-27 14:54:40,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:40,973 INFO L225 Difference]: With dead ends: 122 [2020-10-27 14:54:40,973 INFO L226 Difference]: Without dead ends: 105 [2020-10-27 14:54:40,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=1106, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:54:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-27 14:54:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2020-10-27 14:54:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:54:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-27 14:54:40,998 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 68 [2020-10-27 14:54:40,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:40,999 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-27 14:54:40,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:54:40,999 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-27 14:54:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 14:54:41,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:41,000 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:41,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:54:41,001 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:41,001 INFO L82 PathProgramCache]: Analyzing trace with hash 796113278, now seen corresponding path program 10 times [2020-10-27 14:54:41,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:41,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085683920] [2020-10-27 14:54:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:41,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:41,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:41,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:41,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 14:54:41,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:54:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-27 14:54:41,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:54:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:54:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:54:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:42,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:42,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:42,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:42,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:42,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:42,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:42,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:42,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:42,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:54:42,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:42,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:54:42,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:42,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:54:42,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:42,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:54:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:42,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:42,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:42,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:42,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:42,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:42,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:42,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:54:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:42,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:42,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:42,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:42,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:42,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:42,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:54:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:42,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:42,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:42,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:42,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:42,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:42,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:42,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:42,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:42,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:54:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:42,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:42,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:42,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:42,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-27 14:54:42,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085683920] [2020-10-27 14:54:42,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:42,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:54:42,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044394856] [2020-10-27 14:54:42,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:54:42,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:42,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:54:42,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:54:42,280 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 15 states. [2020-10-27 14:54:43,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:43,215 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2020-10-27 14:54:43,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:54:43,216 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 77 [2020-10-27 14:54:43,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:43,217 INFO L225 Difference]: With dead ends: 140 [2020-10-27 14:54:43,217 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 14:54:43,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:54:43,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 14:54:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2020-10-27 14:54:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 14:54:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-10-27 14:54:43,234 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 77 [2020-10-27 14:54:43,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:43,234 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-10-27 14:54:43,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:54:43,234 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-10-27 14:54:43,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 14:54:43,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:43,235 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:43,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:54:43,236 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:43,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:43,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1689393179, now seen corresponding path program 11 times [2020-10-27 14:54:43,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:43,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136236398] [2020-10-27 14:54:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:43,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:48,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:48,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 14:54:48,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-27 14:54:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:54:48,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:54:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 14:54:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:48,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:48,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:48,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:48,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:48,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:48,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:48,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:48,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:48,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:48,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:54:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:48,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:48,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:48,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:48,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:54:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:48,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:48,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:48,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:48,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:48,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:48,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:48,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:48,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:48,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:54:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:48,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:48,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:48,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:48,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:48,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:48,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 8 proven. 96 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 14:54:48,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136236398] [2020-10-27 14:54:48,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:48,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:54:48,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497318522] [2020-10-27 14:54:48,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:54:48,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:48,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:54:48,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:54:48,839 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 22 states. [2020-10-27 14:54:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:50,573 INFO L93 Difference]: Finished difference Result 128 states and 144 transitions. [2020-10-27 14:54:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:54:50,576 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 77 [2020-10-27 14:54:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:50,577 INFO L225 Difference]: With dead ends: 128 [2020-10-27 14:54:50,577 INFO L226 Difference]: Without dead ends: 125 [2020-10-27 14:54:50,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:54:50,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-27 14:54:50,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 110. [2020-10-27 14:54:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 14:54:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2020-10-27 14:54:50,603 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 77 [2020-10-27 14:54:50,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:50,604 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2020-10-27 14:54:50,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:54:50,604 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2020-10-27 14:54:50,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 14:54:50,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:50,605 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:50,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:54:50,605 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:50,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:50,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1979828449, now seen corresponding path program 12 times [2020-10-27 14:54:50,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:50,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993003882] [2020-10-27 14:54:50,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:50,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:54,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:54,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:55,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:55,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:55,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 14:54:55,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-27 14:54:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:54:55,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:54:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 14:54:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:56,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:56,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:56,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:56,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:56,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:56,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:56,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:56,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:54:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:56,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:56,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:54:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:56,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:56,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:54:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:56,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:56,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:56,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:54:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:56,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:56,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 12 proven. 103 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-27 14:54:56,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993003882] [2020-10-27 14:54:56,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:56,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:54:56,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463039819] [2020-10-27 14:54:56,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:54:56,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:56,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:54:56,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:54:56,069 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand 17 states. [2020-10-27 14:54:58,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:58,005 INFO L93 Difference]: Finished difference Result 150 states and 169 transitions. [2020-10-27 14:54:58,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:54:58,006 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 86 [2020-10-27 14:54:58,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:58,008 INFO L225 Difference]: With dead ends: 150 [2020-10-27 14:54:58,008 INFO L226 Difference]: Without dead ends: 133 [2020-10-27 14:54:58,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=195, Invalid=1445, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:54:58,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-27 14:54:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 121. [2020-10-27 14:54:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 14:54:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 137 transitions. [2020-10-27 14:54:58,039 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 137 transitions. Word has length 86 [2020-10-27 14:54:58,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:58,039 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 137 transitions. [2020-10-27 14:54:58,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:54:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 137 transitions. [2020-10-27 14:54:58,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 14:54:58,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:58,041 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:58,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:54:58,041 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:58,042 INFO L82 PathProgramCache]: Analyzing trace with hash -505678008, now seen corresponding path program 13 times [2020-10-27 14:54:58,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:58,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50570379] [2020-10-27 14:54:58,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:00,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:00,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:00,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:00,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:00,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:01,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:01,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:01,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:55:03,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-27 14:55:03,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:55:03,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:55:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 14:55:03,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:03,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:03,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:03,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:55:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:03,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:03,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:03,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:03,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 10 proven. 146 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:55:03,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50570379] [2020-10-27 14:55:03,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:03,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:55:03,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349705001] [2020-10-27 14:55:03,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:55:03,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:03,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:55:03,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:55:03,893 INFO L87 Difference]: Start difference. First operand 121 states and 137 transitions. Second operand 23 states. [2020-10-27 14:55:06,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:06,410 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2020-10-27 14:55:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:55:06,411 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-10-27 14:55:06,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:06,412 INFO L225 Difference]: With dead ends: 131 [2020-10-27 14:55:06,412 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 14:55:06,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=298, Invalid=1958, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:55:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 14:55:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 92. [2020-10-27 14:55:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:55:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-10-27 14:55:06,430 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 86 [2020-10-27 14:55:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:06,430 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-10-27 14:55:06,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:55:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-10-27 14:55:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 14:55:06,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:06,431 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 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] [2020-10-27 14:55:06,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:55:06,431 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:06,432 INFO L82 PathProgramCache]: Analyzing trace with hash -63017245, now seen corresponding path program 14 times [2020-10-27 14:55:06,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:06,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620436176] [2020-10-27 14:55:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 14:55:11,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:55:11,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:55:11,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:55:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 14:55:11,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:11,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:11,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:11,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:11,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:55:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:11,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:55:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:11,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:11,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:11,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:11,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:11,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:55:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:11,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 10 proven. 129 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 14:55:11,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620436176] [2020-10-27 14:55:11,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:11,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:55:11,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578808002] [2020-10-27 14:55:11,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:55:11,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:11,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:55:11,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:55:11,907 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 19 states. [2020-10-27 14:55:14,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:14,130 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2020-10-27 14:55:14,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:55:14,131 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 95 [2020-10-27 14:55:14,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:14,133 INFO L225 Difference]: With dead ends: 156 [2020-10-27 14:55:14,133 INFO L226 Difference]: Without dead ends: 153 [2020-10-27 14:55:14,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=207, Invalid=1773, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:55:14,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-27 14:55:14,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 136. [2020-10-27 14:55:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 14:55:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 155 transitions. [2020-10-27 14:55:14,165 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 155 transitions. Word has length 95 [2020-10-27 14:55:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:14,165 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 155 transitions. [2020-10-27 14:55:14,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:55:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 155 transitions. [2020-10-27 14:55:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 14:55:14,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:14,166 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2020-10-27 14:55:14,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:55:14,167 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:14,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:14,167 INFO L82 PathProgramCache]: Analyzing trace with hash -182042717, now seen corresponding path program 15 times [2020-10-27 14:55:14,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:14,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313604554] [2020-10-27 14:55:14,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:14,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:14,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 14:55:14,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:55:14,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-27 14:55:14,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:55:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:55:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 14:55:14,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:15,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:15,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:15,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:15,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:15,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:15,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:15,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:15,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:15,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:15,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:15,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:15,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:55:15,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:55:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:55:15,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:15,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:55:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:15,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:15,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:15,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:15,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:15,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:15,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:15,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:55:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:15,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:15,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:15,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:15,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:15,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:15,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:15,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:15,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:15,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:15,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:15,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:15,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:15,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:15,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:15,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:15,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:15,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:15,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:15,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:15,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:55:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:15,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:15,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:15,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:15,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:15,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:15,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:15,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:15,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:15,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:55:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:15,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:15,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:15,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:15,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:15,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:15,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:15,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 105 proven. 60 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 14:55:15,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313604554] [2020-10-27 14:55:15,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:15,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:55:15,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026759777] [2020-10-27 14:55:15,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:55:15,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:15,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:55:15,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:55:15,779 INFO L87 Difference]: Start difference. First operand 136 states and 155 transitions. Second operand 18 states. [2020-10-27 14:55:16,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:16,928 INFO L93 Difference]: Finished difference Result 177 states and 195 transitions. [2020-10-27 14:55:16,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:55:16,929 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-10-27 14:55:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:16,931 INFO L225 Difference]: With dead ends: 177 [2020-10-27 14:55:16,931 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 14:55:16,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:55:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 14:55:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2020-10-27 14:55:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 14:55:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-10-27 14:55:16,952 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 104 [2020-10-27 14:55:16,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:16,953 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-10-27 14:55:16,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:55:16,953 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-10-27 14:55:16,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 14:55:16,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:16,954 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 4, 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] [2020-10-27 14:55:16,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:55:16,954 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:16,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2146077574, now seen corresponding path program 16 times [2020-10-27 14:55:16,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:16,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801379379] [2020-10-27 14:55:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:21,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:21,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 14:55:21,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-27 14:55:21,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:55:21,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:55:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 14:55:21,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:22,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:22,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:22,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:22,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:55:22,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:22,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:22,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:22,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:22,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:22,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:22,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:22,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:22,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:22,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:22,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:55:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:22,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:22,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:22,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:22,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:22,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:22,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:22,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:22,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:22,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:22,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:22,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:22,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:22,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:22,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:55:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:22,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:22,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:22,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:22,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:55:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:22,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:22,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:22,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 12 proven. 195 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-27 14:55:22,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801379379] [2020-10-27 14:55:22,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:22,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:55:22,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019790201] [2020-10-27 14:55:22,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:55:22,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:22,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:55:22,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:55:22,793 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 27 states. [2020-10-27 14:55:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:25,505 INFO L93 Difference]: Finished difference Result 165 states and 188 transitions. [2020-10-27 14:55:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:55:25,506 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 104 [2020-10-27 14:55:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:25,507 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:55:25,507 INFO L226 Difference]: Without dead ends: 162 [2020-10-27 14:55:25,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:55:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-27 14:55:25,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 145. [2020-10-27 14:55:25,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 14:55:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 164 transitions. [2020-10-27 14:55:25,538 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 164 transitions. Word has length 104 [2020-10-27 14:55:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:25,538 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 164 transitions. [2020-10-27 14:55:25,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:55:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 164 transitions. [2020-10-27 14:55:25,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 14:55:25,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:25,540 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:25,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:55:25,540 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:25,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1713154656, now seen corresponding path program 17 times [2020-10-27 14:55:25,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:25,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606465838] [2020-10-27 14:55:25,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:25,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:28,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:30,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 14:55:30,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-27 14:55:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:55:30,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:55:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 14:55:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:31,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:31,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:31,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:31,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:31,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:31,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:31,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:31,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:31,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:55:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:31,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:31,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:31,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:31,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:31,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:31,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:31,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:31,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:31,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:31,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:31,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:31,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:31,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:55:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:31,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:31,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:31,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:31,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:55:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:31,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:31,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:31,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:31,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:31,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:31,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:31,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:31,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:31,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:55:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:31,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:31,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:31,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:31,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:31,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:31,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:31,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:31,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:31,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 18 proven. 219 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:55:31,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606465838] [2020-10-27 14:55:31,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:31,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:55:31,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024401396] [2020-10-27 14:55:31,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:55:31,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:31,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:55:31,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:55:31,433 INFO L87 Difference]: Start difference. First operand 145 states and 164 transitions. Second operand 24 states. [2020-10-27 14:55:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:34,455 INFO L93 Difference]: Finished difference Result 188 states and 214 transitions. [2020-10-27 14:55:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:55:34,458 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 113 [2020-10-27 14:55:34,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:34,460 INFO L225 Difference]: With dead ends: 188 [2020-10-27 14:55:34,460 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 14:55:34,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=206, Invalid=2550, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 14:55:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 14:55:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 145. [2020-10-27 14:55:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 14:55:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 164 transitions. [2020-10-27 14:55:34,490 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 164 transitions. Word has length 113 [2020-10-27 14:55:34,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:34,490 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 164 transitions. [2020-10-27 14:55:34,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:55:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 164 transitions. [2020-10-27 14:55:34,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 14:55:34,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:34,491 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:34,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:55:34,492 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:34,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:34,492 INFO L82 PathProgramCache]: Analyzing trace with hash -253692349, now seen corresponding path program 18 times [2020-10-27 14:55:34,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:34,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731235050] [2020-10-27 14:55:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:36,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:36,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:39,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 14:55:39,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-27 14:55:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:55:39,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:55:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 14:55:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:40,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:40,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:40,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:40,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:40,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:40,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:40,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:40,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:40,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:40,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:40,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:40,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:40,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:40,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:40,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:40,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:40,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:40,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:40,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:40,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:40,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:40,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:40,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:40,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:55:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:40,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:40,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:40,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:40,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:40,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:40,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:40,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:40,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:40,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:40,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:55:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:40,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:40,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:40,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:40,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:40,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:40,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:40,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:40,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:40,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:40,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:55:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:40,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:40,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:40,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:40,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 14 proven. 264 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 14:55:40,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731235050] [2020-10-27 14:55:40,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:40,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:55:40,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975551559] [2020-10-27 14:55:40,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:55:40,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:40,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:55:40,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:55:40,489 INFO L87 Difference]: Start difference. First operand 145 states and 164 transitions. Second operand 26 states. [2020-10-27 14:55:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:43,716 INFO L93 Difference]: Finished difference Result 171 states and 194 transitions. [2020-10-27 14:55:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:55:43,717 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 113 [2020-10-27 14:55:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:43,719 INFO L225 Difference]: With dead ends: 171 [2020-10-27 14:55:43,719 INFO L226 Difference]: Without dead ends: 168 [2020-10-27 14:55:43,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=299, Invalid=2781, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 14:55:43,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-27 14:55:43,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 160. [2020-10-27 14:55:43,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 14:55:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 182 transitions. [2020-10-27 14:55:43,764 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 182 transitions. Word has length 113 [2020-10-27 14:55:43,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:43,765 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 182 transitions. [2020-10-27 14:55:43,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:55:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 182 transitions. [2020-10-27 14:55:43,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 14:55:43,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:43,766 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:43,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:55:43,767 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:43,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:43,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1178586180, now seen corresponding path program 19 times [2020-10-27 14:55:43,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:43,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302992267] [2020-10-27 14:55:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:43,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:44,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:44,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:44,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:48,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:48,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 14:55:48,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:55:48,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:55:48,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:55:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 14:55:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:49,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:49,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:49,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:49,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:49,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:49,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:49,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:49,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:49,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:49,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:49,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:55:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:49,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:49,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:49,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:49,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:55:49,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:49,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:49,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:49,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:49,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:49,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:49,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:49,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:49,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:49,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:49,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:49,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:49,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:49,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:55:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:49,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:49,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:49,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:49,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:49,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:55:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:49,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:49,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:49,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:49,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:55:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:49,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:49,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:49,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:49,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:49,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:49,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:49,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:49,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:49,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:49,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:55:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:49,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:49,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:49,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:49,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 14 proven. 249 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 14:55:49,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302992267] [2020-10-27 14:55:49,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:49,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:55:49,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555456150] [2020-10-27 14:55:49,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:55:49,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:49,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:55:49,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:55:49,480 INFO L87 Difference]: Start difference. First operand 160 states and 182 transitions. Second operand 22 states. [2020-10-27 14:55:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:52,135 INFO L93 Difference]: Finished difference Result 191 states and 219 transitions. [2020-10-27 14:55:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:55:52,138 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 122 [2020-10-27 14:55:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:52,140 INFO L225 Difference]: With dead ends: 191 [2020-10-27 14:55:52,140 INFO L226 Difference]: Without dead ends: 188 [2020-10-27 14:55:52,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:55:52,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-27 14:55:52,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 155. [2020-10-27 14:55:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-27 14:55:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 176 transitions. [2020-10-27 14:55:52,184 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 176 transitions. Word has length 122 [2020-10-27 14:55:52,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:52,184 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 176 transitions. [2020-10-27 14:55:52,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:55:52,185 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 176 transitions. [2020-10-27 14:55:52,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 14:55:52,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:52,186 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:52,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:55:52,186 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:52,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:52,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1828062275, now seen corresponding path program 20 times [2020-10-27 14:55:52,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:52,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138074440] [2020-10-27 14:55:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:53,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:57,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 14:55:57,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 14:55:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:55:57,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:55:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 14:55:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:58,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:58,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:58,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:58,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:58,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:58,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:58,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:58,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:58,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:58,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:58,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:55:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:58,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:58,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:55:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:58,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:58,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:58,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:58,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:58,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:55:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:58,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:58,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:55:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:58,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:58,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 18 proven. 293 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-27 14:55:58,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138074440] [2020-10-27 14:55:58,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:58,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:55:58,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896554488] [2020-10-27 14:55:58,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:55:58,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:58,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:55:58,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:55:58,166 INFO L87 Difference]: Start difference. First operand 155 states and 176 transitions. Second operand 24 states. [2020-10-27 14:56:01,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:01,737 INFO L93 Difference]: Finished difference Result 198 states and 227 transitions. [2020-10-27 14:56:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:56:01,738 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 122 [2020-10-27 14:56:01,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:01,740 INFO L225 Difference]: With dead ends: 198 [2020-10-27 14:56:01,740 INFO L226 Difference]: Without dead ends: 181 [2020-10-27 14:56:01,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=251, Invalid=2505, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 14:56:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-27 14:56:01,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2020-10-27 14:56:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-27 14:56:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 197 transitions. [2020-10-27 14:56:01,795 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 197 transitions. Word has length 122 [2020-10-27 14:56:01,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:01,795 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 197 transitions. [2020-10-27 14:56:01,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:56:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 197 transitions. [2020-10-27 14:56:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 14:56:01,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:01,797 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:01,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:56:01,797 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:01,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:01,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1708040350, now seen corresponding path program 21 times [2020-10-27 14:56:01,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:01,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773116003] [2020-10-27 14:56:01,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:01,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:56:03,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:56:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-27 14:56:03,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:56:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:56:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 14:56:03,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:03,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:03,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:03,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:03,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:03,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:56:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:56:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:56:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:03,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:03,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:03,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:03,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:56:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:03,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:03,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:03,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:03,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:03,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:03,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:03,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:03,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:03,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:03,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:03,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:03,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:56:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:03,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:03,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:56:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:03,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:03,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:56:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:03,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:03,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:03,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:03,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:03,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 180 proven. 118 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-27 14:56:03,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773116003] [2020-10-27 14:56:03,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:03,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:56:03,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992113300] [2020-10-27 14:56:03,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:56:03,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:03,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:56:03,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:56:03,690 INFO L87 Difference]: Start difference. First operand 171 states and 197 transitions. Second operand 21 states. [2020-10-27 14:56:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:05,432 INFO L93 Difference]: Finished difference Result 216 states and 240 transitions. [2020-10-27 14:56:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:56:05,434 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 131 [2020-10-27 14:56:05,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:05,435 INFO L225 Difference]: With dead ends: 216 [2020-10-27 14:56:05,435 INFO L226 Difference]: Without dead ends: 133 [2020-10-27 14:56:05,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=1345, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:56:05,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-27 14:56:05,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2020-10-27 14:56:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 14:56:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2020-10-27 14:56:05,469 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 131 [2020-10-27 14:56:05,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:05,470 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2020-10-27 14:56:05,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:56:05,470 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2020-10-27 14:56:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 14:56:05,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:05,472 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:05,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:56:05,472 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:05,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:05,472 INFO L82 PathProgramCache]: Analyzing trace with hash 150593985, now seen corresponding path program 22 times [2020-10-27 14:56:05,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:05,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467417853] [2020-10-27 14:56:05,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:05,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:05,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:10,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:10,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 14:56:10,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-27 14:56:10,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 14:56:10,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:10,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:56:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 14:56:10,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:11,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:11,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:11,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:11,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:56:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:11,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:11,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:11,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:11,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:11,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:11,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:11,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:11,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:11,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:11,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:11,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:56:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:11,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:11,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:56:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:11,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:11,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:11,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:56:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:11,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:11,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 14 proven. 334 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 14:56:11,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467417853] [2020-10-27 14:56:11,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:11,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:56:11,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222449997] [2020-10-27 14:56:11,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:56:11,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:11,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:56:11,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:56:11,552 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand 28 states. [2020-10-27 14:56:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:16,261 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2020-10-27 14:56:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 14:56:16,262 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 131 [2020-10-27 14:56:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:16,264 INFO L225 Difference]: With dead ends: 145 [2020-10-27 14:56:16,264 INFO L226 Difference]: Without dead ends: 142 [2020-10-27 14:56:16,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=373, Invalid=4049, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 14:56:16,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-27 14:56:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 135. [2020-10-27 14:56:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-27 14:56:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 148 transitions. [2020-10-27 14:56:16,306 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 148 transitions. Word has length 131 [2020-10-27 14:56:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:16,310 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 148 transitions. [2020-10-27 14:56:16,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:56:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 148 transitions. [2020-10-27 14:56:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:56:16,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:16,312 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:16,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:56:16,312 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:16,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1764022651, now seen corresponding path program 23 times [2020-10-27 14:56:16,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:16,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013134771] [2020-10-27 14:56:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 14:56:21,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-27 14:56:21,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 14:56:21,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:56:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 14:56:21,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:22,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:22,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:22,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:22,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:22,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:22,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:22,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:22,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:22,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:56:22,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:56:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:22,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:22,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:22,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:22,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:22,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:22,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:22,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:22,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:22,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:22,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:22,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:22,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:22,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:22,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:22,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:22,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:22,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:22,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:22,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:56:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:22,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:22,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:22,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:22,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:56:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:22,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:22,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:22,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:22,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:22,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:22,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:22,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:22,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:56:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:22,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:22,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:22,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:22,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:22,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 14:56:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:22,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:22,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:22,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 24 proven. 365 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 14:56:22,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013134771] [2020-10-27 14:56:22,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:22,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:56:22,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402407151] [2020-10-27 14:56:22,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:56:22,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:22,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:56:22,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:56:22,409 INFO L87 Difference]: Start difference. First operand 135 states and 148 transitions. Second operand 27 states. [2020-10-27 14:56:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:26,793 INFO L93 Difference]: Finished difference Result 231 states and 267 transitions. [2020-10-27 14:56:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 14:56:26,794 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 140 [2020-10-27 14:56:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:26,796 INFO L225 Difference]: With dead ends: 231 [2020-10-27 14:56:26,796 INFO L226 Difference]: Without dead ends: 214 [2020-10-27 14:56:26,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=238, Invalid=3422, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 14:56:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-27 14:56:26,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 191. [2020-10-27 14:56:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-27 14:56:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 221 transitions. [2020-10-27 14:56:26,862 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 221 transitions. Word has length 140 [2020-10-27 14:56:26,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:26,863 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 221 transitions. [2020-10-27 14:56:26,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:56:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 221 transitions. [2020-10-27 14:56:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 14:56:26,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:26,864 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:26,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:56:26,865 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:26,865 INFO L82 PathProgramCache]: Analyzing trace with hash -324392513, now seen corresponding path program 24 times [2020-10-27 14:56:26,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:26,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308125090] [2020-10-27 14:56:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:26,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:31,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:31,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 14:56:31,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 14:56:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:56:31,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:56:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 14:56:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:32,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:32,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:32,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:32,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:56:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:32,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:32,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:32,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:32,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:32,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:32,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:32,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:32,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:32,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:32,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:32,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:32,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:32,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:56:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:32,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:32,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:32,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:56:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:32,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:32,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:32,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:56:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:32,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:32,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:32,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 14:56:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:32,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:32,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:56:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:32,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:32,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:32,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:32,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:32,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:32,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 18 proven. 409 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-27 14:56:32,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308125090] [2020-10-27 14:56:32,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:32,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:56:32,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730714855] [2020-10-27 14:56:32,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:56:32,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:32,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:56:32,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:56:32,762 INFO L87 Difference]: Start difference. First operand 191 states and 221 transitions. Second operand 25 states. [2020-10-27 14:56:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:36,212 INFO L93 Difference]: Finished difference Result 224 states and 260 transitions. [2020-10-27 14:56:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:56:36,213 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 149 [2020-10-27 14:56:36,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:36,216 INFO L225 Difference]: With dead ends: 224 [2020-10-27 14:56:36,216 INFO L226 Difference]: Without dead ends: 221 [2020-10-27 14:56:36,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=200, Invalid=2662, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:56:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-27 14:56:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 201. [2020-10-27 14:56:36,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-27 14:56:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 233 transitions. [2020-10-27 14:56:36,286 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 233 transitions. Word has length 149 [2020-10-27 14:56:36,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:36,286 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 233 transitions. [2020-10-27 14:56:36,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:56:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 233 transitions. [2020-10-27 14:56:36,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 14:56:36,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:36,289 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:36,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:56:36,290 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:36,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1162589890, now seen corresponding path program 25 times [2020-10-27 14:56:36,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:36,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814124635] [2020-10-27 14:56:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:36,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 14:56:41,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 14:56:41,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:56:41,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:56:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 14:56:41,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:42,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:42,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:42,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:42,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:42,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:42,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:42,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:42,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:42,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:42,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:42,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:42,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:42,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:42,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:42,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:42,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:42,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:42,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:42,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:42,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:56:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:42,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:42,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:42,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:42,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:42,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:56:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:42,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:42,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:42,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:42,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:42,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:42,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:42,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:42,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:56:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:42,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:42,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:42,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:42,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 14:56:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:42,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:42,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:42,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:42,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:42,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:56:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:42,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:42,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:42,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 24 proven. 456 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-27 14:56:42,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814124635] [2020-10-27 14:56:42,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:42,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:56:42,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310374955] [2020-10-27 14:56:42,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:56:42,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:42,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:56:42,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:56:42,345 INFO L87 Difference]: Start difference. First operand 201 states and 233 transitions. Second operand 25 states. [2020-10-27 14:56:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:46,883 INFO L93 Difference]: Finished difference Result 235 states and 271 transitions. [2020-10-27 14:56:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:56:46,885 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 149 [2020-10-27 14:56:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:46,886 INFO L225 Difference]: With dead ends: 235 [2020-10-27 14:56:46,887 INFO L226 Difference]: Without dead ends: 218 [2020-10-27 14:56:46,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=274, Invalid=3032, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:56:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-27 14:56:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 206. [2020-10-27 14:56:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-27 14:56:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 239 transitions. [2020-10-27 14:56:46,948 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 239 transitions. Word has length 149 [2020-10-27 14:56:46,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:46,949 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 239 transitions. [2020-10-27 14:56:46,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:56:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 239 transitions. [2020-10-27 14:56:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 14:56:46,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:46,950 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:46,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:56:46,951 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:46,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1737950137, now seen corresponding path program 26 times [2020-10-27 14:56:46,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:46,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154233745] [2020-10-27 14:56:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:47,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 14:56:48,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:56:48,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1728 [2020-10-27 14:56:48,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:56:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:56:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 14:56:48,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:49,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:49,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:49,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:49,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:49,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:56:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:56:49,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:56:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:49,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:49,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:49,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:49,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:49,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:49,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:56:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:49,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:49,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:56:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:49,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:56:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:49,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 14:56:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:49,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:56:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:49,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:49,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-27 14:56:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:49,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 275 proven. 195 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-10-27 14:56:49,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154233745] [2020-10-27 14:56:49,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:49,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:56:49,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713600318] [2020-10-27 14:56:49,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:56:49,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:49,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:56:49,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:56:49,632 INFO L87 Difference]: Start difference. First operand 206 states and 239 transitions. Second operand 24 states. [2020-10-27 14:56:52,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:52,297 INFO L93 Difference]: Finished difference Result 255 states and 285 transitions. [2020-10-27 14:56:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:56:52,299 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 158 [2020-10-27 14:56:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:52,301 INFO L225 Difference]: With dead ends: 255 [2020-10-27 14:56:52,301 INFO L226 Difference]: Without dead ends: 157 [2020-10-27 14:56:52,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 14:56:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-27 14:56:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2020-10-27 14:56:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-27 14:56:52,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2020-10-27 14:56:52,348 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 158 [2020-10-27 14:56:52,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:52,348 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2020-10-27 14:56:52,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:56:52,348 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2020-10-27 14:56:52,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 14:56:52,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:52,349 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:52,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:56:52,350 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:52,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:52,350 INFO L82 PathProgramCache]: Analyzing trace with hash 22777378, now seen corresponding path program 27 times [2020-10-27 14:56:52,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:52,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546990158] [2020-10-27 14:56:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:52,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:52,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:52,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:52,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking...