/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/verifythis/prefixsum_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 20:02:10,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 20:02:10,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 20:02:10,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 20:02:10,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 20:02:10,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 20:02:10,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 20:02:10,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 20:02:10,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 20:02:10,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 20:02:10,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 20:02:10,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 20:02:10,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 20:02:10,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 20:02:10,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 20:02:10,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 20:02:10,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 20:02:10,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 20:02:10,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 20:02:10,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 20:02:10,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 20:02:10,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 20:02:10,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 20:02:10,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 20:02:10,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 20:02:10,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 20:02:10,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 20:02:10,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 20:02:10,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 20:02:10,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 20:02:10,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 20:02:10,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 20:02:10,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 20:02:10,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 20:02:10,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 20:02:10,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 20:02:10,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 20:02:10,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 20:02:10,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 20:02:10,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 20:02:10,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 20:02:10,983 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 [2020-10-28 20:02:11,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 20:02:11,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 20:02:11,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 20:02:11,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 20:02:11,011 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 20:02:11,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 20:02:11,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 20:02:11,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 20:02:11,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 20:02:11,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 20:02:11,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 20:02:11,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 20:02:11,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 20:02:11,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 20:02:11,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 20:02:11,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 20:02:11,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 20:02:11,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 20:02:11,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 20:02:11,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 20:02:11,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 20:02:11,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 20:02:11,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 20:02:11,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 20:02:11,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 20:02:11,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 20:02:11,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 20:02:11,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 20:02:11,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 20:02:11,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 20:02:11,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 20:02:11,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 20:02:11,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 20:02:11,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 20:02:11,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 20:02:11,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_rec.c [2020-10-28 20:02:11,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c80f1133/7bec6613d1944d7498c91151a78add48/FLAG9866efb7d [2020-10-28 20:02:12,086 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 20:02:12,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/prefixsum_rec.c [2020-10-28 20:02:12,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c80f1133/7bec6613d1944d7498c91151a78add48/FLAG9866efb7d [2020-10-28 20:02:12,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c80f1133/7bec6613d1944d7498c91151a78add48 [2020-10-28 20:02:12,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 20:02:12,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 20:02:12,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 20:02:12,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 20:02:12,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 20:02:12,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ed19dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12, skipping insertion in model container [2020-10-28 20:02:12,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 20:02:12,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 20:02:12,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 20:02:12,742 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 20:02:12,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 20:02:12,799 INFO L208 MainTranslator]: Completed translation [2020-10-28 20:02:12,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12 WrapperNode [2020-10-28 20:02:12,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 20:02:12,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 20:02:12,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 20:02:12,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 20:02:12,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 20:02:12,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 20:02:12,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 20:02:12,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 20:02:12,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12" (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 [2020-10-28 20:02:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 20:02:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 20:02:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 20:02:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 20:02:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 20:02:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2020-10-28 20:02:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2020-10-28 20:02:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2020-10-28 20:02:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 20:02:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 20:02:12,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 20:02:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 20:02:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 20:02:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 20:02:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 20:02:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 20:02:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 20:02:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 20:02:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 20:02:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 20:02:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2020-10-28 20:02:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 20:02:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 20:02:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2020-10-28 20:02:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2020-10-28 20:02:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 20:02:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 20:02:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 20:02:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 20:02:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 20:02:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 20:02:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 20:02:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 20:02:13,481 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 20:02:13,481 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 20:02:13,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:02:13 BoogieIcfgContainer [2020-10-28 20:02:13,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 20:02:13,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 20:02:13,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 20:02:13,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 20:02:13,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:02:12" (1/3) ... [2020-10-28 20:02:13,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c07aede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:02:13, skipping insertion in model container [2020-10-28 20:02:13,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12" (2/3) ... [2020-10-28 20:02:13,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c07aede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:02:13, skipping insertion in model container [2020-10-28 20:02:13,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:02:13" (3/3) ... [2020-10-28 20:02:13,493 INFO L111 eAbstractionObserver]: Analyzing ICFG prefixsum_rec.c [2020-10-28 20:02:13,504 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 20:02:13,509 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 20:02:13,520 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 20:02:13,546 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 20:02:13,547 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 20:02:13,547 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 20:02:13,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 20:02:13,547 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 20:02:13,547 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 20:02:13,547 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 20:02:13,547 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 20:02:13,565 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-28 20:02:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 20:02:13,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:13,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:13,576 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:13,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1110892396, now seen corresponding path program 1 times [2020-10-28 20:02:13,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:13,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680773219] [2020-10-28 20:02:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:13,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 20:02:16,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 20:02:16,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2387 [2020-10-28 20:02:16,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 20:02:16,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 20:02:16,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:16,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 20:02:16,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:16,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 20:02:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:02:16,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:16,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 20:02:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:16,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 20:02:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 20:02:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 20:02:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:16,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:16,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 20:02:16,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 20:02:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:16,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:16,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 20:02:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:02:16,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:02:16,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 20:02:16,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 20:02:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:16,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 20:02:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 20:02:16,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680773219] [2020-10-28 20:02:16,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:16,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 20:02:16,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941801074] [2020-10-28 20:02:16,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 20:02:16,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:16,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 20:02:16,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 20:02:16,459 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 4 states. [2020-10-28 20:02:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:16,867 INFO L93 Difference]: Finished difference Result 127 states and 162 transitions. [2020-10-28 20:02:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 20:02:16,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-28 20:02:16,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:16,886 INFO L225 Difference]: With dead ends: 127 [2020-10-28 20:02:16,887 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 20:02:16,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 20:02:16,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 20:02:16,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-28 20:02:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 20:02:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-10-28 20:02:16,946 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 55 [2020-10-28 20:02:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:16,947 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-10-28 20:02:16,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 20:02:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-10-28 20:02:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 20:02:16,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:16,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:16,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 20:02:16,952 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:16,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1354306966, now seen corresponding path program 1 times [2020-10-28 20:02:16,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:16,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941061951] [2020-10-28 20:02:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:17,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:17,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 20:02:21,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 20:02:21,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 20:02:21,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:02:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 20:02:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 20:02:21,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:22,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:22,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:22,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:22,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 20:02:22,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:22,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:22,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:22,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:22,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:22,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:22,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:22,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:22,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:22,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:22,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:22,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:22,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:02:22,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:22,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:22,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:22,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 20:02:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:22,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:22,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:22,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:22,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:22,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:22,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:22,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:22,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 20:02:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:22,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:22,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:22,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:22,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:22,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:22,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 20:02:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:22,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:22,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:22,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:22,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:22,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:22,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:22,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 20:02:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:22,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:02:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 20:02:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:22,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:02:22,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 20:02:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:22,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:22,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:22,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:22,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:02:22,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:22,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:22,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 20:02:22,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941061951] [2020-10-28 20:02:22,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:22,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 20:02:22,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293848697] [2020-10-28 20:02:22,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 20:02:22,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:22,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 20:02:22,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 20:02:22,301 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 8 states. [2020-10-28 20:02:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:22,911 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2020-10-28 20:02:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 20:02:22,912 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-28 20:02:22,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:22,915 INFO L225 Difference]: With dead ends: 78 [2020-10-28 20:02:22,915 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 20:02:22,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-28 20:02:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 20:02:22,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-28 20:02:22,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 20:02:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-28 20:02:22,954 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 55 [2020-10-28 20:02:22,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:22,956 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-28 20:02:22,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 20:02:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-28 20:02:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 20:02:22,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:22,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:22,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 20:02:22,964 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:22,967 INFO L82 PathProgramCache]: Analyzing trace with hash -865674136, now seen corresponding path program 1 times [2020-10-28 20:02:22,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:22,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822278283] [2020-10-28 20:02:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:23,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:23,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:23,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:28,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 20:02:28,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 20:02:28,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 20:02:28,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:28,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 20:02:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 20:02:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 20:02:28,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:28,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:28,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:28,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:28,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:28,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:28,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:28,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:28,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:28,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:28,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:28,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:02:28,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:28,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:28,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:02:28,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:28,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 20:02:28,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:28,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:02:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 20:02:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:28,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 20:02:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:28,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:28,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:28,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:28,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:28,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:28,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:28,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 20:02:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:28,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:28,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:28,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:28,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:28,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 20:02:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:28,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:28,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:28,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:28,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:28,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:28,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:28,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 20:02:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:28,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:28,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:02:28,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:28,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 20:02:28,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:28,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:02:28,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:28,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 20:02:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:28,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:28,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:28,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 20:02:28,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:28,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:28,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:28,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:02:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 20:02:28,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822278283] [2020-10-28 20:02:28,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:28,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 20:02:28,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817748789] [2020-10-28 20:02:28,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 20:02:28,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:28,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 20:02:28,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 20:02:28,442 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 12 states. [2020-10-28 20:02:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:29,605 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2020-10-28 20:02:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 20:02:29,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-28 20:02:29,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:29,613 INFO L225 Difference]: With dead ends: 93 [2020-10-28 20:02:29,613 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 20:02:29,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-28 20:02:29,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 20:02:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-28 20:02:29,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 20:02:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2020-10-28 20:02:29,657 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 57 [2020-10-28 20:02:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:29,660 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2020-10-28 20:02:29,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 20:02:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2020-10-28 20:02:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 20:02:29,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:29,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:29,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 20:02:29,671 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:29,672 INFO L82 PathProgramCache]: Analyzing trace with hash -162593323, now seen corresponding path program 1 times [2020-10-28 20:02:29,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:29,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852579346] [2020-10-28 20:02:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:29,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:32,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 20:02:34,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 20:02:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 20:02:34,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 20:02:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 20:02:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 20:02:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:34,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:34,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:34,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:34,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:34,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:02:34,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 20:02:34,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:02:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 20:02:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:34,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:34,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:34,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:34,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 20:02:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:34,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:34,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 20:02:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:34,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:34,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:34,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:02:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:34,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:02:34,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:02:34,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:34,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:34,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:02:34,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 20:02:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:34,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:34,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:34,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:34,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:34,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 20:02:34,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852579346] [2020-10-28 20:02:34,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:34,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 20:02:34,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031901872] [2020-10-28 20:02:34,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 20:02:34,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:34,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 20:02:34,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 20:02:34,997 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 12 states. [2020-10-28 20:02:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:38,113 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2020-10-28 20:02:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 20:02:38,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-28 20:02:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:38,119 INFO L225 Difference]: With dead ends: 101 [2020-10-28 20:02:38,119 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 20:02:38,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-10-28 20:02:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 20:02:38,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-10-28 20:02:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 20:02:38,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2020-10-28 20:02:38,153 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 58 [2020-10-28 20:02:38,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:38,154 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2020-10-28 20:02:38,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 20:02:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2020-10-28 20:02:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 20:02:38,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:38,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:38,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 20:02:38,157 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:38,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1909836051, now seen corresponding path program 2 times [2020-10-28 20:02:38,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:38,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485452444] [2020-10-28 20:02:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:38,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:38,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:39,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 20:02:43,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 20:02:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 20:02:43,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 20:02:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 20:02:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 20:02:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:43,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:43,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:43,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:43,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:43,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:43,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:43,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:43,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:02:43,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 20:02:43,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:02:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:02:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:43,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 20:02:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:43,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:02:43,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:02:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:02:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:43,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 20:02:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:43,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:43,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:43,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 20:02:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:44,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:44,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:44,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:44,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:44,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:44,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:44,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 20:02:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:44,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:44,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:02:44,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:44,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 20:02:44,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:44,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:02:44,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:44,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 20:02:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:44,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:44,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:44,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:44,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 20:02:44,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:44,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 20:02:44,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:02:44,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 20:02:44,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485452444] [2020-10-28 20:02:44,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:44,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 20:02:44,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743488930] [2020-10-28 20:02:44,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 20:02:44,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:44,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 20:02:44,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-28 20:02:44,145 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand 20 states. [2020-10-28 20:02:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:47,020 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2020-10-28 20:02:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 20:02:47,021 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2020-10-28 20:02:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:47,024 INFO L225 Difference]: With dead ends: 117 [2020-10-28 20:02:47,024 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 20:02:47,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=174, Invalid=1308, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 20:02:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 20:02:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2020-10-28 20:02:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 20:02:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 134 transitions. [2020-10-28 20:02:47,048 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 134 transitions. Word has length 60 [2020-10-28 20:02:47,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:47,049 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 134 transitions. [2020-10-28 20:02:47,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 20:02:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 134 transitions. [2020-10-28 20:02:47,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 20:02:47,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:47,051 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:47,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 20:02:47,051 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:47,052 INFO L82 PathProgramCache]: Analyzing trace with hash 834833542, now seen corresponding path program 3 times [2020-10-28 20:02:47,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:47,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527341877] [2020-10-28 20:02:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:47,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:47,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:50,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:50,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:52,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 20:02:52,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 20:02:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 20:02:52,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:52,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 20:02:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 20:02:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 20:02:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:52,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:52,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:52,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:52,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:52,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:52,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:52,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:52,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:52,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:52,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:02:52,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:52,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:52,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:52,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:52,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:52,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 20:02:52,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 20:02:52,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:52,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:02:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 20:02:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:52,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 20:02:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:52,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:52,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:52,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:52,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:52,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:02:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:02:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:52,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 20:02:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:52,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:52,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:52,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:52,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:52,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:52,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:52,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:52,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:52,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 20:02:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:52,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:52,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:52,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:52,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:52,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:52,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 20:02:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:52,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:02:52,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:52,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 20:02:52,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:52,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:52,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:02:52,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 20:02:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:52,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:52,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 20:02:52,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:52,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:02:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 20:02:52,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527341877] [2020-10-28 20:02:52,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:52,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 20:02:52,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123008625] [2020-10-28 20:02:52,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 20:02:52,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:52,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 20:02:52,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-28 20:02:52,728 INFO L87 Difference]: Start difference. First operand 107 states and 134 transitions. Second operand 15 states. [2020-10-28 20:03:00,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:03:00,800 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2020-10-28 20:03:00,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 20:03:00,801 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-10-28 20:03:00,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:03:00,804 INFO L225 Difference]: With dead ends: 141 [2020-10-28 20:03:00,804 INFO L226 Difference]: Without dead ends: 128 [2020-10-28 20:03:00,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2020-10-28 20:03:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-28 20:03:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 120. [2020-10-28 20:03:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-28 20:03:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2020-10-28 20:03:00,836 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 61 [2020-10-28 20:03:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:03:00,836 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2020-10-28 20:03:00,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 20:03:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2020-10-28 20:03:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 20:03:00,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:03:00,841 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:03:00,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 20:03:00,841 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:03:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:03:00,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1869494131, now seen corresponding path program 4 times [2020-10-28 20:03:00,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:03:00,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045848834] [2020-10-28 20:03:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:03:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:00,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:01,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:02,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:02,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:02,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:05,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:05,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:05,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 20:03:05,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 20:03:05,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 20:03:05,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:05,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 20:03:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 20:03:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 20:03:05,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:03:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:05,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:05,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:05,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:03:05,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:05,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:05,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:05,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:03:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:06,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:06,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:06,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:06,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:03:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:03:06,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:06,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:06,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:03:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:06,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:06,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 20:03:06,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:06,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 20:03:06,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:06,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 20:03:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 20:03:06,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 20:03:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:06,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:06,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:06,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:06,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:03:06,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:06,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:03:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:03:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 20:03:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:06,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:06,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:06,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:06,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:06,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:03:06,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:06,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:03:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 20:03:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 20:03:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:06,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:06,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:06,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:03:06,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:06,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:03:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 20:03:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:06,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:06,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:06,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:06,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:03:06,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:03:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 20:03:06,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:06,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:03:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:06,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 20:03:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:06,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:06,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 20:03:06,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:06,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:03:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:03:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 20:03:06,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045848834] [2020-10-28 20:03:06,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:03:06,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 20:03:06,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483227403] [2020-10-28 20:03:06,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 20:03:06,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:03:06,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 20:03:06,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-28 20:03:06,458 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand 16 states. [2020-10-28 20:03:12,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:03:12,286 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2020-10-28 20:03:12,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 20:03:12,287 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-10-28 20:03:12,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:03:12,289 INFO L225 Difference]: With dead ends: 154 [2020-10-28 20:03:12,292 INFO L226 Difference]: Without dead ends: 141 [2020-10-28 20:03:12,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2020-10-28 20:03:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-28 20:03:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2020-10-28 20:03:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 20:03:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 153 transitions. [2020-10-28 20:03:12,338 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 153 transitions. Word has length 62 [2020-10-28 20:03:12,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:03:12,339 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 153 transitions. [2020-10-28 20:03:12,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 20:03:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 153 transitions. [2020-10-28 20:03:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 20:03:12,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:03:12,344 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:03:12,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 20:03:12,345 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:03:12,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:03:12,346 INFO L82 PathProgramCache]: Analyzing trace with hash -415765978, now seen corresponding path program 5 times [2020-10-28 20:03:12,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:03:12,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598882959] [2020-10-28 20:03:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:03:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:12,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:12,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:12,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:17,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:17,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 20:03:17,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 20:03:17,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 20:03:17,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:17,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 20:03:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 20:03:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 20:03:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:17,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:03:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:17,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:17,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:17,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:17,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:03:17,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:17,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:17,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:03:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:17,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:17,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:17,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:17,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:17,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:03:17,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:17,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:03:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:03:17,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:03:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:17,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:17,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 20:03:17,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:17,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 20:03:17,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:17,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:03:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 20:03:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:17,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 20:03:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:17,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:17,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:17,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:03:17,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:17,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:17,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 20:03:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:17,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:17,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:17,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:17,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:03:17,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:17,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:03:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:17,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 20:03:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:17,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:17,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:17,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:03:17,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:17,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:03:17,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 20:03:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:17,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:17,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:17,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:03:17,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:17,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 20:03:17,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:17,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:17,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:03:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:03:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:03:17,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:17,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 20:03:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:17,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:17,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:17,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:17,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:17,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:03:17,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:17,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 20:03:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 20:03:17,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598882959] [2020-10-28 20:03:17,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:03:17,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 20:03:17,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618354086] [2020-10-28 20:03:17,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 20:03:17,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:03:17,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 20:03:17,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-28 20:03:17,910 INFO L87 Difference]: Start difference. First operand 121 states and 153 transitions. Second operand 13 states. [2020-10-28 20:03:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:03:21,467 INFO L93 Difference]: Finished difference Result 156 states and 202 transitions. [2020-10-28 20:03:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 20:03:21,468 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2020-10-28 20:03:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:03:21,470 INFO L225 Difference]: With dead ends: 156 [2020-10-28 20:03:21,470 INFO L226 Difference]: Without dead ends: 131 [2020-10-28 20:03:21,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2020-10-28 20:03:21,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-28 20:03:21,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-10-28 20:03:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-28 20:03:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 165 transitions. [2020-10-28 20:03:21,493 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 165 transitions. Word has length 63 [2020-10-28 20:03:21,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:03:21,494 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 165 transitions. [2020-10-28 20:03:21,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 20:03:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 165 transitions. [2020-10-28 20:03:21,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 20:03:21,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:03:21,495 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:03:21,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 20:03:21,496 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:03:21,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:03:21,496 INFO L82 PathProgramCache]: Analyzing trace with hash -947434093, now seen corresponding path program 1 times [2020-10-28 20:03:21,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:03:21,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82868397] [2020-10-28 20:03:21,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:03:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:21,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:21,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:21,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 20:03:26,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 20:03:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 20:03:26,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:03:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 20:03:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 20:03:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:03:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:26,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:03:26,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:26,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:03:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:26,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:03:26,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:03:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:26,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:03:26,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:03:26,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 20:03:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:26,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:03:26,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 20:03:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:26,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:03:26,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:26,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 20:03:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:26,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:03:26,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 20:03:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:03:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:03:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 20:03:26,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:03:26,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 20:03:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 20:03:26,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 20:03:26,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:03:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:03:26,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 20:03:26,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:03:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:26,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:26,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:03:26,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 20:03:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:26,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:26,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:26,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:03:26,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:26,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 20:03:26,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82868397] [2020-10-28 20:03:26,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:03:26,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 20:03:26,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922395610] [2020-10-28 20:03:26,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 20:03:26,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:03:26,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 20:03:26,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 20:03:26,760 INFO L87 Difference]: Start difference. First operand 128 states and 165 transitions. Second operand 10 states. [2020-10-28 20:03:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:03:27,409 INFO L93 Difference]: Finished difference Result 170 states and 226 transitions. [2020-10-28 20:03:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 20:03:27,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-28 20:03:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:03:27,415 INFO L225 Difference]: With dead ends: 170 [2020-10-28 20:03:27,416 INFO L226 Difference]: Without dead ends: 150 [2020-10-28 20:03:27,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-28 20:03:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-28 20:03:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 144. [2020-10-28 20:03:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-28 20:03:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 188 transitions. [2020-10-28 20:03:27,463 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 188 transitions. Word has length 70 [2020-10-28 20:03:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:03:27,465 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 188 transitions. [2020-10-28 20:03:27,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 20:03:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 188 transitions. [2020-10-28 20:03:27,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 20:03:27,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:03:27,472 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:03:27,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 20:03:27,472 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:03:27,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:03:27,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1323590174, now seen corresponding path program 1 times [2020-10-28 20:03:27,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:03:27,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058713327] [2020-10-28 20:03:27,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:03:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:27,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:28,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:32,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:32,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:32,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 20:03:32,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 20:03:32,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5241 [2020-10-28 20:03:32,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:32,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-28 20:03:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 20:03:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 20:03:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:34,627 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2020-10-28 20:03:35,270 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 35 [2020-10-28 20:03:35,844 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 31 [2020-10-28 20:03:36,672 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 31 [2020-10-28 20:03:37,162 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 20 [2020-10-28 20:03:38,247 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 52 [2020-10-28 20:03:39,302 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 51 [2020-10-28 20:03:41,434 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 131 DAG size of output: 53 [2020-10-28 20:03:42,848 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 94 DAG size of output: 52 [2020-10-28 20:03:45,834 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2020-10-28 20:03:48,594 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 112 DAG size of output: 51 [2020-10-28 20:03:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:03:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:49,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:49,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:49,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:03:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:49,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:03:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:49,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:49,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:49,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:03:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:03:49,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:49,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:03:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:49,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:49,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:49,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:03:49,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:49,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 20:03:49,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:49,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:03:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:03:49,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:50,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 20:03:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:50,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:50,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:50,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:50,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:03:50,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:50,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:03:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:03:50,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:50,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 20:03:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:50,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:50,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:50,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:50,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:50,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:03:50,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:50,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:03:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:50,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 20:03:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:50,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:50,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:50,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:03:50,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:50,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:50,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:03:50,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 20:03:50,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 20:03:50,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:03:50,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 20:03:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:50,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:50,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:03:50,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:50,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 20:03:50,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:50,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:03:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 20:03:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 20:03:50,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:51,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 20:03:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:51,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:51,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:51,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:51,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-28 20:03:51,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:51,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:51,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:03:51,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 20:03:51,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:03:51,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:58,604 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 144 DAG size of output: 48 [2020-10-28 20:04:07,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 20:04:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:07,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:07,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:07,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:04:07,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:07,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 20:04:07,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:07,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:04:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:04:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:04:07,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 20:04:07,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058713327] [2020-10-28 20:04:07,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:04:07,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 20:04:07,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168861282] [2020-10-28 20:04:07,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 20:04:07,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:04:07,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 20:04:07,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 20:04:07,701 INFO L87 Difference]: Start difference. First operand 144 states and 188 transitions. Second operand 33 states. [2020-10-28 20:04:13,761 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 20:04:15,157 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-28 20:04:23,063 WARN L193 SmtUtils]: Spent 7.04 s on a formula simplification. DAG size of input: 155 DAG size of output: 143 [2020-10-28 20:04:33,092 WARN L193 SmtUtils]: Spent 8.36 s on a formula simplification. DAG size of input: 157 DAG size of output: 145 [2020-10-28 20:04:42,023 WARN L193 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 128 [2020-10-28 20:04:46,609 WARN L193 SmtUtils]: Spent 4.18 s on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 20:04:50,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:04:50,378 INFO L93 Difference]: Finished difference Result 174 states and 224 transitions. [2020-10-28 20:04:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 20:04:50,381 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 68 [2020-10-28 20:04:50,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:04:50,384 INFO L225 Difference]: With dead ends: 174 [2020-10-28 20:04:50,384 INFO L226 Difference]: Without dead ends: 171 [2020-10-28 20:04:50,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 61.5s TimeCoverageRelationStatistics Valid=434, Invalid=3598, Unknown=0, NotChecked=0, Total=4032 [2020-10-28 20:04:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-28 20:04:50,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2020-10-28 20:04:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-28 20:04:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 205 transitions. [2020-10-28 20:04:50,422 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 205 transitions. Word has length 68 [2020-10-28 20:04:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:04:50,423 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 205 transitions. [2020-10-28 20:04:50,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 20:04:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 205 transitions. [2020-10-28 20:04:50,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 20:04:50,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:04:50,428 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:04:50,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 20:04:50,428 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:04:50,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:04:50,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1145232431, now seen corresponding path program 2 times [2020-10-28 20:04:50,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:04:50,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154828952] [2020-10-28 20:04:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:04:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:50,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:50,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:50,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:50,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 20:04:55,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 20:04:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 20:04:55,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 20:04:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 20:04:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 20:04:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:04:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:55,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:04:55,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:04:55,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:04:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:04:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:04:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:04:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:04:55,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:55,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:04:55,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:04:55,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:04:55,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:04:55,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:04:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:04:55,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 20:04:55,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:04:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:04:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:04:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 20:04:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:55,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:04:55,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:04:55,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:04:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:04:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:04:55,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 20:04:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:04:55,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:55,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:04:55,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:04:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:04:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:04:55,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 20:04:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:04:55,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:55,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:04:55,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:04:55,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:04:55,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:04:55,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 20:04:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:04:55,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:04:55,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:04:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 20:04:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:04:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 20:04:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:55,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 20:04:55,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:55,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 20:04:55,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:04:55,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 20:04:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:04:55,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:04:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:55,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:04:55,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:04:55,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:04:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:04:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:04:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 20:04:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:55,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:04:55,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:04:55,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:04:55,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:04:55,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:04:55,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:04:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:04:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:04:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:04:55,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:04:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 20:04:55,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154828952] [2020-10-28 20:04:55,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:04:55,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 20:04:55,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132668186] [2020-10-28 20:04:55,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 20:04:55,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:04:55,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 20:04:55,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 20:04:55,805 INFO L87 Difference]: Start difference. First operand 158 states and 205 transitions. Second operand 12 states. [2020-10-28 20:04:59,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:04:59,503 INFO L93 Difference]: Finished difference Result 227 states and 295 transitions. [2020-10-28 20:04:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 20:04:59,511 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-28 20:04:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:04:59,513 INFO L225 Difference]: With dead ends: 227 [2020-10-28 20:04:59,514 INFO L226 Difference]: Without dead ends: 167 [2020-10-28 20:04:59,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-10-28 20:04:59,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-28 20:04:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2020-10-28 20:04:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-28 20:04:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2020-10-28 20:04:59,558 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 72 [2020-10-28 20:04:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:04:59,558 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2020-10-28 20:04:59,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 20:04:59,558 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2020-10-28 20:04:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 20:04:59,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:04:59,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:04:59,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 20:04:59,560 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:04:59,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:04:59,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1587249884, now seen corresponding path program 1 times [2020-10-28 20:04:59,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:04:59,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263981229] [2020-10-28 20:04:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:04:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:04:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:59,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:04:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:00,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:04,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:04,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 20:05:04,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 20:05:04,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 20:05:04,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:04,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:05:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 20:05:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 20:05:04,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:04,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:05:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:04,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:04,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:04,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:04,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:05:04,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:04,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:04,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:04,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:05:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:04,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:04,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:04,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:04,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:04,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:04,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:04,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:05:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:04,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:04,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:04,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:04,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:05:04,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:04,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:04,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:04,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:04,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:04,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:04,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 20:05:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:04,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:04,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:04,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:04,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:05:04,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:04,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:04,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 20:05:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:04,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:04,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:04,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:04,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:04,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:04,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:04,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:04,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:04,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:04,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:04,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:04,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 20:05:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:04,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:04,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:04,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:04,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:04,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:04,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:04,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:05:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 20:05:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:04,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:04,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:04,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:04,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:04,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 20:05:04,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:04,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:05:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 20:05:04,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:05:04,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 20:05:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:04,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:04,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:04,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 20:05:04,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:04,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 20:05:04,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:04,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:05:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:05:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 20:05:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:04,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:04,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:04,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:04,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:04,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:05:04,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:05,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:05:05,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:05,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 20:05:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:05,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:05,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:05,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:05,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:05:05,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:05,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:05:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:05:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-28 20:05:05,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263981229] [2020-10-28 20:05:05,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:05:05,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 20:05:05,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646981222] [2020-10-28 20:05:05,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 20:05:05,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:05:05,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 20:05:05,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 20:05:05,046 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand 9 states. [2020-10-28 20:05:06,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:05:06,348 INFO L93 Difference]: Finished difference Result 179 states and 227 transitions. [2020-10-28 20:05:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 20:05:06,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-28 20:05:06,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:05:06,356 INFO L225 Difference]: With dead ends: 179 [2020-10-28 20:05:06,356 INFO L226 Difference]: Without dead ends: 164 [2020-10-28 20:05:06,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-28 20:05:06,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-28 20:05:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 154. [2020-10-28 20:05:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-28 20:05:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 196 transitions. [2020-10-28 20:05:06,387 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 196 transitions. Word has length 71 [2020-10-28 20:05:06,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:05:06,387 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 196 transitions. [2020-10-28 20:05:06,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 20:05:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 196 transitions. [2020-10-28 20:05:06,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 20:05:06,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:05:06,390 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:05:06,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 20:05:06,391 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:05:06,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:05:06,391 INFO L82 PathProgramCache]: Analyzing trace with hash 357040436, now seen corresponding path program 1 times [2020-10-28 20:05:06,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:05:06,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834578289] [2020-10-28 20:05:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:05:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:06,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:06,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:06,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:06,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:06,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:07,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 20:05:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:11,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:05:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:11,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:11,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:11,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:05:11,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:05:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:11,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:11,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:11,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:11,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:05:11,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:05:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:11,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 20:05:11,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:11,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 20:05:11,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:05:11,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 20:05:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:11,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:11,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:05:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 20:05:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:11,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:11,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:11,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:11,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:05:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 20:05:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:11,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:11,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:11,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 20:05:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 20:05:11,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:11,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 20:05:11,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:05:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 20:05:11,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:11,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:11,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:11,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:05:11,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:11,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:11,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:05:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:05:11,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:05:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:11,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:11,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:11,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 20:05:11,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:05:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:11,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 20:05:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:11,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:11,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:11,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:11,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:11,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 20:05:11,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:11,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:05:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:05:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:05:11,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 20:05:11,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834578289] [2020-10-28 20:05:11,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:05:11,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 20:05:11,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212216462] [2020-10-28 20:05:11,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 20:05:11,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:05:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 20:05:11,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 20:05:11,829 INFO L87 Difference]: Start difference. First operand 154 states and 196 transitions. Second operand 9 states. [2020-10-28 20:05:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:05:13,010 INFO L93 Difference]: Finished difference Result 173 states and 215 transitions. [2020-10-28 20:05:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 20:05:13,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-28 20:05:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:05:13,014 INFO L225 Difference]: With dead ends: 173 [2020-10-28 20:05:13,014 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 20:05:13,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-28 20:05:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 20:05:13,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-10-28 20:05:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 20:05:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 147 transitions. [2020-10-28 20:05:13,034 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 147 transitions. Word has length 79 [2020-10-28 20:05:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:05:13,035 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 147 transitions. [2020-10-28 20:05:13,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 20:05:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 147 transitions. [2020-10-28 20:05:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 20:05:13,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:05:13,036 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:05:13,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 20:05:13,037 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:05:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:05:13,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1484801226, now seen corresponding path program 1 times [2020-10-28 20:05:13,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:05:13,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139997433] [2020-10-28 20:05:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:05:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:13,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:13,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:13,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 20:05:18,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 20:05:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 20:05:18,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:05:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-28 20:05:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 20:05:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:05:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:18,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:18,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:18,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:05:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:18,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:18,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:05:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:18,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:18,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:18,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 20:05:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:18,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:05:18,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 20:05:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:18,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:18,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 20:05:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:18,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:18,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 20:05:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 20:05:18,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:05:18,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:18,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:05:18,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:05:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:18,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:05:18,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 20:05:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 20:05:18,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 20:05:18,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:05:18,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 20:05:18,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 20:05:18,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 20:05:18,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 20:05:18,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:05:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 20:05:18,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:18,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:05:18,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:18,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:05:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 20:05:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:18,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:05:18,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:18,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:18,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:05:18,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:05:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:18,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:18,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:18,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:05:18,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:18,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:05:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:05:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:05:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-28 20:05:18,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139997433] [2020-10-28 20:05:18,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:05:18,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 20:05:18,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817063305] [2020-10-28 20:05:18,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 20:05:18,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:05:18,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 20:05:18,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 20:05:18,611 INFO L87 Difference]: Start difference. First operand 121 states and 147 transitions. Second operand 9 states. [2020-10-28 20:05:19,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:05:19,682 INFO L93 Difference]: Finished difference Result 147 states and 186 transitions. [2020-10-28 20:05:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 20:05:19,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-28 20:05:19,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:05:19,687 INFO L225 Difference]: With dead ends: 147 [2020-10-28 20:05:19,688 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 20:05:19,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-28 20:05:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 20:05:19,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-28 20:05:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-28 20:05:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 151 transitions. [2020-10-28 20:05:19,707 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 151 transitions. Word has length 93 [2020-10-28 20:05:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:05:19,707 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 151 transitions. [2020-10-28 20:05:19,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 20:05:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 151 transitions. [2020-10-28 20:05:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 20:05:19,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:05:19,709 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:05:19,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 20:05:19,709 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:05:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:05:19,710 INFO L82 PathProgramCache]: Analyzing trace with hash 704606497, now seen corresponding path program 1 times [2020-10-28 20:05:19,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:05:19,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81452237] [2020-10-28 20:05:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:05:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:19,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:20,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:20,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:20,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:20,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:20,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:20,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:24,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:24,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 20:05:24,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 20:05:24,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 20:05:24,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:24,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 20:05:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 20:05:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 20:05:24,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:24,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:05:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:24,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:24,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:24,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:24,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:24,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:24,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:24,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:24,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:05:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:24,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:24,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:24,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:24,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:24,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:24,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:05:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:24,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:25,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:05:25,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:25,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 20:05:25,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:25,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:05:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:25,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:05:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:25,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 20:05:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:25,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:25,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:25,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:05:25,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:25,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:05:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:05:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:25,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 20:05:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:25,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:25,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:25,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:25,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:05:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:25,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 20:05:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:25,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:25,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:25,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:25,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:25,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:25,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:25,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:25,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:25,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:05:25,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:25,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 20:05:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:25,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:25,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 20:05:25,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:05:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 20:05:25,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:25,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:05:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:05:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 20:05:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:25,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:25,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:25,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:05:25,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:25,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:05:25,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:05:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:25,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:25,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:25,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:25,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 20:05:25,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:25,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:25,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:05:25,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 20:05:25,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:25,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 20:05:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:25,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:25,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 20:05:25,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:05:25,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:25,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 20:05:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:25,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:25,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:25,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:25,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:25,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:25,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:25,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:25,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:25,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 20:05:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:25,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:25,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:25,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:25,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:05:25,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:25,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:25,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:25,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:25,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:25,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-28 20:05:25,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81452237] [2020-10-28 20:05:25,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:05:25,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 20:05:25,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316982588] [2020-10-28 20:05:25,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 20:05:25,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:05:25,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 20:05:25,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-28 20:05:25,759 INFO L87 Difference]: Start difference. First operand 124 states and 151 transitions. Second operand 16 states. [2020-10-28 20:05:28,019 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-10-28 20:05:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:05:28,412 INFO L93 Difference]: Finished difference Result 157 states and 196 transitions. [2020-10-28 20:05:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 20:05:28,416 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 86 [2020-10-28 20:05:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:05:28,417 INFO L225 Difference]: With dead ends: 157 [2020-10-28 20:05:28,417 INFO L226 Difference]: Without dead ends: 131 [2020-10-28 20:05:28,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2020-10-28 20:05:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-28 20:05:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-10-28 20:05:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-28 20:05:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 160 transitions. [2020-10-28 20:05:28,441 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 160 transitions. Word has length 86 [2020-10-28 20:05:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:05:28,458 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 160 transitions. [2020-10-28 20:05:28,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 20:05:28,458 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 160 transitions. [2020-10-28 20:05:28,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 20:05:28,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:05:28,459 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:05:28,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 20:05:28,460 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:05:28,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:05:28,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1921428426, now seen corresponding path program 2 times [2020-10-28 20:05:28,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:05:28,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782183194] [2020-10-28 20:05:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:05:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:28,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:28,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:29,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 20:05:33,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 20:05:33,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 20:05:33,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 20:05:33,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 20:05:33,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 20:05:33,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:05:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:33,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:05:33,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:33,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:33,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:05:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:33,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:05:33,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:05:33,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:33,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:05:33,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:05:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:33,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 20:05:33,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:05:33,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 20:05:33,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 20:05:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:33,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:05:33,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:05:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:05:33,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 20:05:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:33,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:33,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:05:33,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 20:05:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:33,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:33,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:05:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 20:05:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 20:05:33,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:05:33,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 20:05:33,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:33,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 20:05:33,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:33,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:33,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:33,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:33,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:05:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:33,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:33,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:05:33,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:33,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 20:05:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 20:05:33,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 20:05:33,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:05:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:05:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 20:05:33,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:33,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:05:33,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:05:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 20:05:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:33,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:33,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:33,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:33,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:05:33,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:33,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:05:33,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-28 20:05:33,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782183194] [2020-10-28 20:05:33,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:05:33,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 20:05:33,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169646602] [2020-10-28 20:05:33,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 20:05:33,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:05:33,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 20:05:33,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-28 20:05:33,974 INFO L87 Difference]: Start difference. First operand 128 states and 160 transitions. Second operand 13 states. [2020-10-28 20:05:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:05:35,619 INFO L93 Difference]: Finished difference Result 151 states and 187 transitions. [2020-10-28 20:05:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 20:05:35,622 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-28 20:05:35,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:05:35,624 INFO L225 Difference]: With dead ends: 151 [2020-10-28 20:05:35,624 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 20:05:35,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-10-28 20:05:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 20:05:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-10-28 20:05:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-28 20:05:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2020-10-28 20:05:35,643 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 83 [2020-10-28 20:05:35,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:05:35,644 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2020-10-28 20:05:35,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 20:05:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2020-10-28 20:05:35,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 20:05:35,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:05:35,646 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:05:35,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 20:05:35,646 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:05:35,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:05:35,646 INFO L82 PathProgramCache]: Analyzing trace with hash 437844692, now seen corresponding path program 2 times [2020-10-28 20:05:35,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:05:35,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335524742] [2020-10-28 20:05:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:05:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:35,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:39,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:40,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:40,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 20:05:40,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 20:05:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 20:05:40,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:40,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 20:05:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 20:05:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 20:05:40,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:41,045 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 16 [2020-10-28 20:05:41,217 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2020-10-28 20:05:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:05:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:41,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:41,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:41,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:05:41,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:41,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:05:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:41,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:41,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:41,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:41,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:05:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:05:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:41,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:05:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:41,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:05:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:41,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:41,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 20:05:41,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:41,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 20:05:41,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:41,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:41,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:05:41,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:41,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 20:05:41,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:41,931 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-10-28 20:05:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 20:05:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:42,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:42,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:42,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:42,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:05:42,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:42,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:42,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:05:42,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:05:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:42,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 20:05:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:42,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:42,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:42,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:42,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:42,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:05:42,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:42,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:05:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:42,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 20:05:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:42,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:42,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:05:42,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:42,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:05:42,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:42,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:05:42,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:42,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 20:05:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:42,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:42,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 20:05:42,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 20:05:42,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:42,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:05:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 20:05:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:42,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:42,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:42,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:42,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:42,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:42,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:42,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:42,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:42,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:42,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:05:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:42,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:42,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:05:42,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:42,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:05:42,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:42,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:05:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:05:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:05:42,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:42,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 20:05:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:42,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:42,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 20:05:42,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 20:05:42,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:42,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 20:05:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 20:05:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 20:05:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:43,196 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-10-28 20:05:43,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:05:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:43,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:43,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:43,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 20:05:43,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:43,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:05:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 20:05:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:05:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:43,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 20:05:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:05:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:05:43,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:05:43,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:05:43,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:05:43,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 20:05:43,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:05:43,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:05:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:05:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 20:05:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:05:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:05:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-28 20:05:43,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335524742] [2020-10-28 20:05:43,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:05:43,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 20:05:43,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937529260] [2020-10-28 20:05:43,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 20:05:43,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:05:43,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 20:05:43,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2020-10-28 20:05:43,683 INFO L87 Difference]: Start difference. First operand 118 states and 146 transitions. Second operand 26 states. [2020-10-28 20:05:45,436 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70