/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:42:10,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:42:10,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:42:10,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:42:10,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:42:10,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:42:10,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:42:10,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:42:10,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:42:10,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:42:10,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:42:10,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:42:10,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:42:10,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:42:10,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:42:10,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:42:10,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:42:10,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:42:10,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:42:10,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:42:10,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:42:10,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:42:10,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:42:10,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:42:11,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:42:11,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:42:11,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:42:11,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:42:11,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:42:11,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:42:11,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:42:11,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:42:11,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:42:11,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:42:11,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:42:11,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:42:11,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:42:11,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:42:11,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:42:11,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:42:11,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:42:11,017 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 [2020-10-12 15:42:11,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:42:11,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:42:11,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:42:11,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:42:11,058 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:42:11,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:42:11,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:42:11,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:42:11,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:42:11,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:42:11,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:42:11,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:42:11,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:42:11,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:42:11,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:42:11,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:42:11,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:42:11,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:42:11,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:42:11,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:42:11,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:42:11,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:42:11,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:42:11,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:42:11,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:42:11,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:42:11,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:42:11,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:42:11,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:42:11,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:42:11,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:42:11,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:42:11,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:42:11,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:42:11,408 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:42:11,408 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i [2020-10-12 15:42:11,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d865145e/4799ceb16d1b442b8742fab54e5402e9/FLAG4be51c02c [2020-10-12 15:42:11,980 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:42:11,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i [2020-10-12 15:42:12,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d865145e/4799ceb16d1b442b8742fab54e5402e9/FLAG4be51c02c [2020-10-12 15:42:12,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d865145e/4799ceb16d1b442b8742fab54e5402e9 [2020-10-12 15:42:12,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:42:12,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:42:12,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:42:12,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:42:12,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:42:12,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:42:12" (1/1) ... [2020-10-12 15:42:12,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74296a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12, skipping insertion in model container [2020-10-12 15:42:12,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:42:12" (1/1) ... [2020-10-12 15:42:12,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:42:12,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:42:12,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:42:12,852 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:42:12,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:42:12,988 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:42:12,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12 WrapperNode [2020-10-12 15:42:12,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:42:12,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:42:12,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:42:12,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:42:13,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12" (1/1) ... [2020-10-12 15:42:13,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12" (1/1) ... [2020-10-12 15:42:13,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12" (1/1) ... [2020-10-12 15:42:13,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12" (1/1) ... [2020-10-12 15:42:13,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12" (1/1) ... [2020-10-12 15:42:13,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12" (1/1) ... [2020-10-12 15:42:13,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12" (1/1) ... [2020-10-12 15:42:13,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:42:13,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:42:13,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:42:13,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:42:13,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12" (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 [2020-10-12 15:42:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:42:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:42:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:42:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:42:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-12 15:42:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2020-10-12 15:42:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2020-10-12 15:42:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2020-10-12 15:42:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2020-10-12 15:42:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2020-10-12 15:42:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2020-10-12 15:42:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2020-10-12 15:42:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2020-10-12 15:42:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:42:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:42:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:42:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:42:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:42:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:42:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:42:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:42:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:42:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:42:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:42:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:42:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:42:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:42:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:42:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:42:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:42:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:42:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:42:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:42:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:42:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:42:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:42:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:42:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:42:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:42:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:42:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:42:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:42:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:42:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:42:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:42:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:42:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:42:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:42:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:42:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:42:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:42:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:42:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:42:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:42:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:42:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:42:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:42:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:42:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:42:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:42:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:42:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:42:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:42:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:42:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:42:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:42:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:42:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:42:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:42:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:42:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:42:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:42:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:42:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:42:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:42:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:42:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:42:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:42:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:42:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:42:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:42:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:42:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:42:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:42:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:42:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:42:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:42:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:42:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:42:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:42:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:42:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:42:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:42:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:42:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:42:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:42:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:42:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:42:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:42:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:42:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:42:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:42:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:42:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:42:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:42:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:42:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:42:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:42:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:42:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:42:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:42:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:42:13,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:42:13,160 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-12 15:42:13,160 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2020-10-12 15:42:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:42:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:42:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2020-10-12 15:42:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:42:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2020-10-12 15:42:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:42:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-12 15:42:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:42:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2020-10-12 15:42:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2020-10-12 15:42:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2020-10-12 15:42:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2020-10-12 15:42:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2020-10-12 15:42:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:42:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:42:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:42:13,887 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:42:13,888 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-10-12 15:42:13,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:42:13 BoogieIcfgContainer [2020-10-12 15:42:13,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:42:13,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:42:13,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:42:13,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:42:13,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:42:12" (1/3) ... [2020-10-12 15:42:13,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6fb0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:42:13, skipping insertion in model container [2020-10-12 15:42:13,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:12" (2/3) ... [2020-10-12 15:42:13,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6fb0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:42:13, skipping insertion in model container [2020-10-12 15:42:13,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:42:13" (3/3) ... [2020-10-12 15:42:13,902 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2020-10-12 15:42:13,913 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:42:13,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:42:13,938 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:42:13,966 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:42:13,966 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:42:13,967 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:42:13,967 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:42:13,967 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:42:13,967 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:42:13,968 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:42:13,968 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:42:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2020-10-12 15:42:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:42:14,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:14,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:14,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:14,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:14,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1243342133, now seen corresponding path program 1 times [2020-10-12 15:42:14,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:14,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53535600] [2020-10-12 15:42:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:14,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:14,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:14,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:42:14,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:42:14,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 15:42:14,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:42:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 15:42:14,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:14,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:14,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:14,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:14,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:42:14,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:14,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:42:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:14,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:14,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:14,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 15:42:14,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:42:14,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:42:14,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 15:42:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:14,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:42:14,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53535600] [2020-10-12 15:42:14,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:42:14,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:42:14,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036555902] [2020-10-12 15:42:14,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:42:14,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:42:14,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:42:14,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:42:14,627 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2020-10-12 15:42:14,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:14,937 INFO L93 Difference]: Finished difference Result 234 states and 383 transitions. [2020-10-12 15:42:14,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:42:14,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-12 15:42:14,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:14,951 INFO L225 Difference]: With dead ends: 234 [2020-10-12 15:42:14,951 INFO L226 Difference]: Without dead ends: 118 [2020-10-12 15:42:14,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:42:14,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-12 15:42:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2020-10-12 15:42:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-12 15:42:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2020-10-12 15:42:15,014 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 24 [2020-10-12 15:42:15,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:15,015 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2020-10-12 15:42:15,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:42:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2020-10-12 15:42:15,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:42:15,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:15,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:15,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:42:15,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:15,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:15,019 INFO L82 PathProgramCache]: Analyzing trace with hash -428183820, now seen corresponding path program 1 times [2020-10-12 15:42:15,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:15,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42084201] [2020-10-12 15:42:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:15,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:19,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:20,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:20,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 15:42:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:42:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 15:42:20,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 15:42:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:42:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 15:42:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:20,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:20,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:20,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:20,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:20,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:20,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:42:20,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:20,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:42:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:20,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:20,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:20,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:25,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:25,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:42:25,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:42:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 15:42:25,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 15:42:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 15:42:25,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:42:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:25,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:25,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:42:25,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:25,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 15:42:25,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:42:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:42:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:42:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:25,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:25,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:25,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:42:25,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:42:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:42:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:42:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:42:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:25,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:25,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:25,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:42:25,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:42:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 15:42:25,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:42:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:42:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:42:26,356 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-12 15:42:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:26,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:26,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:26,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 15:42:26,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:26,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:42:26,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:26,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:42:26,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:26,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 15:42:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:26,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:26,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:42:26,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:26,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 15:42:26,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:42:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:42:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:26,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:26,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:26,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:26,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 15:42:26,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:42:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:42:26,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:42:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 15:42:27,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42084201] [2020-10-12 15:42:27,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:42:27,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 15:42:27,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007762933] [2020-10-12 15:42:27,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 15:42:27,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:42:27,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 15:42:27,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:42:27,047 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand 25 states. [2020-10-12 15:42:27,985 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-12 15:42:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:30,096 INFO L93 Difference]: Finished difference Result 160 states and 198 transitions. [2020-10-12 15:42:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:42:30,101 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-10-12 15:42:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:30,106 INFO L225 Difference]: With dead ends: 160 [2020-10-12 15:42:30,106 INFO L226 Difference]: Without dead ends: 157 [2020-10-12 15:42:30,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=175, Invalid=1465, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 15:42:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-12 15:42:30,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 120. [2020-10-12 15:42:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-12 15:42:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-10-12 15:42:30,145 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 60 [2020-10-12 15:42:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:30,146 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-10-12 15:42:30,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 15:42:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-10-12 15:42:30,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 15:42:30,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:30,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:30,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:42:30,149 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:30,149 INFO L82 PathProgramCache]: Analyzing trace with hash 832502526, now seen corresponding path program 1 times [2020-10-12 15:42:30,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:30,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527684420] [2020-10-12 15:42:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:30,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:31,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:32,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:32,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:34,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:35,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:35,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 15:42:35,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:42:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 15:42:35,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 15:42:35,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:42:35,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 15:42:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:35,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:35,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:35,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:35,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:42:35,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:42:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:35,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:35,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:37,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:37,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:42:37,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:42:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1770 [2020-10-12 15:42:37,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 15:42:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 15:42:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:37,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:37,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:37,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:42:37,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:37,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 15:42:37,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:37,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:42:37,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:37,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:42:37,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:37,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:37,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:37,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:37,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:37,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:42:37,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:42:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:42:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:37,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:42:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:37,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:37,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:37,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:42:37,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:42:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 15:42:37,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:42:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:42:37,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:38,168 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-12 15:42:38,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:38,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:38,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:38,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:38,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:38,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:42:38,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:38,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:42:38,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:38,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:42:38,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:38,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 15:42:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:38,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:38,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:42:38,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:38,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 15:42:38,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:42:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:42:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:38,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:38,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:38,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:38,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 15:42:38,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:42:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:42:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:42:38,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527684420] [2020-10-12 15:42:38,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:42:38,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 15:42:38,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439355536] [2020-10-12 15:42:38,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 15:42:38,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:42:38,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 15:42:38,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:42:38,979 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 30 states. [2020-10-12 15:42:40,151 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-10-12 15:42:42,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:42,880 INFO L93 Difference]: Finished difference Result 155 states and 190 transitions. [2020-10-12 15:42:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:42:42,880 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 62 [2020-10-12 15:42:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:42,884 INFO L225 Difference]: With dead ends: 155 [2020-10-12 15:42:42,884 INFO L226 Difference]: Without dead ends: 152 [2020-10-12 15:42:42,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=204, Invalid=1776, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 15:42:42,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-12 15:42:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2020-10-12 15:42:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-12 15:42:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-10-12 15:42:42,903 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 62 [2020-10-12 15:42:42,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:42,903 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-10-12 15:42:42,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 15:42:42,904 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-10-12 15:42:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 15:42:42,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:42,906 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:42,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:42:42,906 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:42,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:42,907 INFO L82 PathProgramCache]: Analyzing trace with hash 751531946, now seen corresponding path program 1 times [2020-10-12 15:42:42,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:42,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771347497] [2020-10-12 15:42:42,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:43,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:44,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:45,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:46,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:47,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:47,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 15:42:47,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:42:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 15:42:47,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 15:42:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:42:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 15:42:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:42:48,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:48,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:48,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:48,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:48,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:42:48,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:48,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:48,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:48,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:48,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:48,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:42:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:48,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:48,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:49,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:52,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:52,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:42:52,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:42:52,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4226 [2020-10-12 15:42:52,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:52,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 15:42:52,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:52,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 15:42:52,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:52,669 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-10-12 15:42:52,849 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2020-10-12 15:42:53,264 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2020-10-12 15:42:53,781 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 68 [2020-10-12 15:42:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:53,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:53,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:53,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:42:53,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:42:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 15:42:53,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:53,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:42:53,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:53,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:42:53,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:54,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:54,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:54,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:54,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:54,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:42:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:42:54,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:42:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:42:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:42:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:54,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:54,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:42:54,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 15:42:54,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:42:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:42:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:42:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:54,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:54,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 15:42:54,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:42:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:42:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 15:42:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:54,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:54,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:42:54,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:54,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 15:42:54,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:42:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:42:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:14,441 WARN L193 SmtUtils]: Spent 17.39 s on a formula simplification. DAG size of input: 342 DAG size of output: 237 [2020-10-12 15:43:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:43:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:15,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:15,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:43:15,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:15,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:43:15,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:15,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:43:15,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:43:15,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:43:15,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:43:15,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771347497] [2020-10-12 15:43:15,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:43:15,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 15:43:15,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396226390] [2020-10-12 15:43:15,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 15:43:15,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:15,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 15:43:15,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:43:15,695 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 31 states. [2020-10-12 15:43:16,612 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-12 15:43:16,875 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-12 15:43:24,351 WARN L193 SmtUtils]: Spent 7.11 s on a formula simplification. DAG size of input: 260 DAG size of output: 251 [2020-10-12 15:43:25,625 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-12 15:43:26,306 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2020-10-12 15:43:27,604 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-12 15:43:32,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:32,409 INFO L93 Difference]: Finished difference Result 196 states and 243 transitions. [2020-10-12 15:43:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 15:43:32,416 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 66 [2020-10-12 15:43:32,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:32,419 INFO L225 Difference]: With dead ends: 196 [2020-10-12 15:43:32,419 INFO L226 Difference]: Without dead ends: 193 [2020-10-12 15:43:32,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=223, Invalid=2327, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 15:43:32,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-12 15:43:32,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 144. [2020-10-12 15:43:32,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-12 15:43:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2020-10-12 15:43:32,444 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 66 [2020-10-12 15:43:32,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:32,445 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2020-10-12 15:43:32,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 15:43:32,445 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2020-10-12 15:43:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 15:43:32,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:32,447 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:43:32,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:43:32,448 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:32,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:32,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1187745704, now seen corresponding path program 1 times [2020-10-12 15:43:32,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:32,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485026795] [2020-10-12 15:43:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:33,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:37,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:37,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 15:43:37,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:43:37,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4547 [2020-10-12 15:43:37,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:37,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 15:43:37,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:43:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 15:43:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:38,151 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 40 [2020-10-12 15:43:38,414 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-10-12 15:43:38,632 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2020-10-12 15:43:38,877 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-10-12 15:43:39,012 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 23 [2020-10-12 15:43:39,145 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 18 [2020-10-12 15:43:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:39,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:39,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:39,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:43:39,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:43:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:39,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:40,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:40,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:43:40,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:40,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1472 [2020-10-12 15:43:40,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 15:43:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:43:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 15:43:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:41,191 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2020-10-12 15:43:43,352 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 197 DAG size of output: 109 [2020-10-12 15:43:44,735 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 184 DAG size of output: 99 [2020-10-12 15:43:45,485 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 61 [2020-10-12 15:43:45,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:43:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:45,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:45,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:45,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:43:45,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:45,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:43:45,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:43:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:45,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:43:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:45,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:45,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:45,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:43:45,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:45,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:45,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:45,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:45,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:43:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:45,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:45,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:43:45,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:45,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 15:43:45,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:43:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:43:45,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:43:45,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:49,647 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 229 DAG size of output: 86 [2020-10-12 15:44:27,334 WARN L193 SmtUtils]: Spent 35.01 s on a formula simplification. DAG size of input: 579 DAG size of output: 348 [2020-10-12 15:44:29,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:44:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:44:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:44:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:44:29,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:44:29,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:44:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 15:44:29,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:44:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:44:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:44:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:44:29,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:44:33,592 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 339 DAG size of output: 62 [2020-10-12 15:44:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 15:44:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:44:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:44:34,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:44:34,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:44:34,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:44:34,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 15:44:34,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:44:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:44:34,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:44:34,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:44:34,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:44:45,145 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 251 DAG size of output: 101 [2020-10-12 15:46:16,798 WARN L193 SmtUtils]: Spent 1.48 m on a formula simplification. DAG size of input: 570 DAG size of output: 350 [2020-10-12 15:46:20,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:46:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:20,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:20,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:20,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:20,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 15:46:20,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:46:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:46:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:46:20,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0