/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 SingleStatement --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:40,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:40,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:40,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:40,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:40,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:40,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:40,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:40,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:40,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:40,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:40,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:40,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:40,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:40,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:40,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:40,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:40,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:40,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:40,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:40,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:40,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:40,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:40,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:40,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:40,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:40,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:40,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:40,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:40,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:40,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:40,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:40,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:40,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:40,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:40,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:40,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:40,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:40,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:40,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:40,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:40,690 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 [2020-09-24 16:00:40,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:40,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:40,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:40,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:40,760 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:40,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:40,760 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:40,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:40,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:40,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:40,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:40,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:40,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:40,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:40,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:40,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:40,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:40,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:40,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:40,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:40,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:40,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:40,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:40,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:40,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:40,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:40,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:40,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:40,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:40,768 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 -> SingleStatement 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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:00:41,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:41,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:41,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:41,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:41,255 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:41,256 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-24 16:00:41,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cc7e2148/5f106b13262d45098bf7faddf88e6ea8/FLAG852a30db5 [2020-09-24 16:00:41,997 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:41,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-24 16:00:42,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cc7e2148/5f106b13262d45098bf7faddf88e6ea8/FLAG852a30db5 [2020-09-24 16:00:42,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cc7e2148/5f106b13262d45098bf7faddf88e6ea8 [2020-09-24 16:00:42,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:42,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:42,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:42,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:42,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:42,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:42,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aeaf6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42, skipping insertion in model container [2020-09-24 16:00:42,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:42,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:42,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:42,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:42,863 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:42,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:42,979 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:42,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42 WrapperNode [2020-09-24 16:00:42,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:42,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:42,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:42,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:42,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:42,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:43,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:43,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:43,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:43,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:43,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:43,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:43,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:43,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:43,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:43,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (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 [2020-09-24 16:00:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:00:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 16:00:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 16:00:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-24 16:00:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-24 16:00:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-24 16:00:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-24 16:00:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-24 16:00:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:00:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:00:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:00:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:00:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:00:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:00:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:00:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:00:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:00:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:00:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:00:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:00:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:00:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:00:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:00:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:00:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:00:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 16:00:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 16:00:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-24 16:00:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-24 16:00:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-24 16:00:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:00:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:00:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:00:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:00:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:00:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:00:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:00:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:00:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:00:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:00:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:00:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:00:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:00:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:00:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:00:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:00:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:00:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:00:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:00:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:00:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:00:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:00:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:00:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:00:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:00:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:00:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:00:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:00:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:00:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:00:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:00:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:00:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:00:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:00:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:00:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:00:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:00:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:00:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:00:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:00:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:00:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 16:00:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:00:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:00:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 16:00:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:00:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:00:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 16:00:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:00:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:00:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:00:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:00:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:00:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:00:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:00:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:00:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:00:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:00:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:00:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:00:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:00:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:00:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:00:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:00:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:00:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:00:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:00:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:00:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:00:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:00:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:00:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:00:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:00:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:00:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:00:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:00:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:00:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:00:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:00:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:00:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:00:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:00:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:00:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:00:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:00:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:00:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-24 16:00:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:00:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:00:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-24 16:00:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:00:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:00:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:00:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:00:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:43,755 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:43,756 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 16:00:43,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:43 BoogieIcfgContainer [2020-09-24 16:00:43,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:43,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:43,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:43,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:43,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:42" (1/3) ... [2020-09-24 16:00:43,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@829b163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:43, skipping insertion in model container [2020-09-24 16:00:43,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (2/3) ... [2020-09-24 16:00:43,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@829b163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:43, skipping insertion in model container [2020-09-24 16:00:43,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:43" (3/3) ... [2020-09-24 16:00:43,771 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-24 16:00:43,782 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:43,793 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:43,816 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:43,849 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:43,849 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:43,850 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:43,850 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:43,850 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:43,850 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:43,850 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:43,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-24 16:00:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 16:00:43,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:43,889 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:43,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:43,898 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-24 16:00:43,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:43,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253396736] [2020-09-24 16:00:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,244 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,245 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,245 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,245 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 16:00:44,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 16:00:44,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:00:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:00:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:00:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,402 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,402 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,403 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:00:44,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:44,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:44,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:00:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,487 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,487 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,488 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,488 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:00:44,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:00:44,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:44,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:00:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,562 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,562 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,562 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,562 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:00:44,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 16:00:44,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:00:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 16:00:44,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 16:00:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,672 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,673 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,673 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:00:44,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:44,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:00:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 16:00:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,717 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,717 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,717 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:00:44,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:44,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:00:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:44,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 16:00:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,753 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,756 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,756 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,756 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:00:44,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:44,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 16:00:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:44,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 16:00:44,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253396736] [2020-09-24 16:00:44,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:44,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 16:00:44,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36889295] [2020-09-24 16:00:44,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:00:44,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:44,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:00:44,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:00:44,829 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 9 states. [2020-09-24 16:00:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:45,515 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2020-09-24 16:00:45,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 16:00:45,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-24 16:00:45,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:45,534 INFO L225 Difference]: With dead ends: 187 [2020-09-24 16:00:45,535 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 16:00:45,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:00:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 16:00:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-24 16:00:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 16:00:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-24 16:00:45,642 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 82 [2020-09-24 16:00:45,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:45,643 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-24 16:00:45,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:00:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-24 16:00:45,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 16:00:45,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:45,648 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:45,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:45,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:45,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:45,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-24 16:00:45,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:45,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715219639] [2020-09-24 16:00:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:45,722 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:45,722 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:45,723 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:45,723 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:45,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-24 16:00:45,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:45,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:00:45,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:00:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 16:00:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:00:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 16:00:45,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:45,824 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:45,824 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:45,825 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:45,825 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:45,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:00:45,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:45,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:45,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:45,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:45,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:45,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:45,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:00:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:45,854 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:45,854 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:45,854 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:45,854 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:45,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:00:45,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:45,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:45,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:45,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:45,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:45,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:00:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:45,867 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:45,867 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:45,868 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:45,868 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:45,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:45,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:45,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:45,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:45,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:45,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:00:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:45,883 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:45,883 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:45,883 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:45,884 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:45,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:45,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:45,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:45,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:45,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:45,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:45,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:45,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:45,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 16:00:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:45,921 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:45,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:45,922 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:45,922 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:45,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:45,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:00:45,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:45,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:45,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:45,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:00:45,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:45,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 16:00:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:45,985 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:45,985 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:45,986 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:45,986 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:45,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:00:45,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:45,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:00:45,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:45,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:45,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 16:00:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:00:45,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 16:00:46,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715219639] [2020-09-24 16:00:46,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:46,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 16:00:46,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725384022] [2020-09-24 16:00:46,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 16:00:46,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:46,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 16:00:46,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:00:46,051 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-24 16:00:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:46,724 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-24 16:00:46,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 16:00:46,730 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-24 16:00:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:46,738 INFO L225 Difference]: With dead ends: 113 [2020-09-24 16:00:46,738 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 16:00:46,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:00:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 16:00:46,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-24 16:00:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 16:00:46,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-24 16:00:46,773 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-24 16:00:46,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:46,774 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-24 16:00:46,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 16:00:46,774 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-24 16:00:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-24 16:00:46,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:46,781 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:46,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:46,782 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:46,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-24 16:00:46,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:46,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539515263] [2020-09-24 16:00:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:46,944 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 16:00:46,944 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:46,945 FATAL L256 erpolLogProxyWrapper]: Difference in width: 6 [2020-09-24 16:00:46,945 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:46,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 16:00:46,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:46,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 16:00:46,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:46,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 16:00:46,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 16:00:46,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 16:00:46,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:47,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:47,044 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:47,044 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:47,044 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:47,044 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:47,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:00:47,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:47,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:47,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:47,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:00:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:47,071 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:47,071 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:47,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:47,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:47,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:00:47,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:47,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:47,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:47,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:47,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:00:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:47,084 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:47,084 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:47,084 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:47,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:47,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:47,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:47,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:47,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:00:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:47,100 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:47,100 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:47,101 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:47,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:47,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:47,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:47,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:47,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:47,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 16:00:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:47,148 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:47,149 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:47,149 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:47,149 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:47,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:47,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:47,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 16:00:47,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:47,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:00:47,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 16:00:47,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:47,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 16:00:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:47,237 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:47,237 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:47,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:47,238 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:47,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 16:00:47,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:00:47,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:00:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 16:00:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 16:00:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-24 16:00:47,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539515263] [2020-09-24 16:00:47,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:47,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 16:00:47,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45372554] [2020-09-24 16:00:47,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:00:47,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:47,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:00:47,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:00:47,426 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-24 16:00:48,454 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-09-24 16:00:49,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:49,014 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-09-24 16:00:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 16:00:49,015 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-24 16:00:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:49,018 INFO L225 Difference]: With dead ends: 103 [2020-09-24 16:00:49,018 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 16:00:49,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2020-09-24 16:00:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 16:00:49,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2020-09-24 16:00:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 16:00:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-24 16:00:49,030 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-24 16:00:49,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:49,030 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-24 16:00:49,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:00:49,031 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-24 16:00:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-24 16:00:49,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:49,032 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:49,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:00:49,033 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:49,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:49,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-24 16:00:49,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:49,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360596565] [2020-09-24 16:00:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:49,149 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-24 16:00:49,149 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -33 [2020-09-24 16:00:49,149 FATAL L256 erpolLogProxyWrapper]: Difference in width: 33 [2020-09-24 16:00:49,150 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:49,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 16:00:49,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 16:00:49,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:00:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 16:00:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 16:00:49,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:49,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:49,237 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:49,237 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:49,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:49,238 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:49,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:00:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:49,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:49,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:00:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:49,261 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:49,262 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:49,262 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:49,262 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:49,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:00:49,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:49,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:00:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:49,272 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:49,273 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:49,273 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:49,273 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:49,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:49,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:49,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:49,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:00:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:49,298 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:49,298 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:49,299 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:49,299 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:49,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:49,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:49,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:00:49,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:00:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:49,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 16:00:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:49,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:49,354 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:49,354 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:49,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:49,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:49,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 16:00:49,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:00:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:00:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:00:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:49,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 16:00:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:49,423 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:49,424 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:49,424 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:49,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:49,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 16:00:49,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:49,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 16:00:49,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:49,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:00:49,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 16:00:49,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:00:49,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 16:00:49,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360596565] [2020-09-24 16:00:49,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:49,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 16:00:49,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872046326] [2020-09-24 16:00:49,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 16:00:49,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:49,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 16:00:49,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:00:49,619 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 16 states. [2020-09-24 16:00:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:51,307 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-09-24 16:00:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 16:00:51,308 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-09-24 16:00:51,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:51,316 INFO L225 Difference]: With dead ends: 134 [2020-09-24 16:00:51,317 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 16:00:51,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=262, Invalid=1220, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 16:00:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 16:00:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 87. [2020-09-24 16:00:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 16:00:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-09-24 16:00:51,348 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 99 [2020-09-24 16:00:51,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:51,351 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-09-24 16:00:51,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 16:00:51,351 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-09-24 16:00:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 16:00:51,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:51,372 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:51,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:00:51,372 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:51,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1242921541, now seen corresponding path program 1 times [2020-09-24 16:00:51,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:51,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887753530] [2020-09-24 16:00:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:51,825 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 16:00:51,826 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -29 [2020-09-24 16:00:51,826 FATAL L256 erpolLogProxyWrapper]: Difference in width: 29 [2020-09-24 16:00:51,826 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:51,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 16:00:51,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-09-24 16:00:51,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:51,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 16:00:51,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 16:00:51,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 16:00:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:51,983 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:51,983 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:51,984 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:51,984 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:51,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:00:51,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:51,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:00:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:52,025 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:52,026 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:52,026 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:52,027 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:52,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:00:52,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:52,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:52,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:52,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:00:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:52,039 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:52,039 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:52,040 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:52,040 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:52,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:52,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:52,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:52,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:00:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:52,091 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:52,091 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:52,091 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:52,092 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:52,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:52,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:52,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 16:00:52,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:52,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:00:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 16:00:52,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:52,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 16:00:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:52,289 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:52,289 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:52,289 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:52,290 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:52,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:52,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:52,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 16:00:52,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:52,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:00:52,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:00:52,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:00:52,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 16:00:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:52,648 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:52,648 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:52,649 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:52,649 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:52,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 16:00:52,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:00:52,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:00:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 16:00:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 16:00:52,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887753530] [2020-09-24 16:00:52,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:52,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-24 16:00:52,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707160892] [2020-09-24 16:00:52,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-24 16:00:52,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:52,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-24 16:00:52,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-09-24 16:00:52,849 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 26 states. [2020-09-24 16:00:55,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:55,259 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-09-24 16:00:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 16:00:55,260 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 101 [2020-09-24 16:00:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:55,263 INFO L225 Difference]: With dead ends: 119 [2020-09-24 16:00:55,263 INFO L226 Difference]: Without dead ends: 106 [2020-09-24 16:00:55,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=247, Invalid=2203, Unknown=0, NotChecked=0, Total=2450 [2020-09-24 16:00:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-24 16:00:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 90. [2020-09-24 16:00:55,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-24 16:00:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-09-24 16:00:55,278 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 101 [2020-09-24 16:00:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:55,278 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-09-24 16:00:55,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-24 16:00:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-09-24 16:00:55,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-24 16:00:55,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:55,281 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:55,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:00:55,281 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:55,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1667050223, now seen corresponding path program 2 times [2020-09-24 16:00:55,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:55,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520583778] [2020-09-24 16:00:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:55,765 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 16:00:55,766 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -16 [2020-09-24 16:00:55,766 FATAL L256 erpolLogProxyWrapper]: Difference in width: 16 [2020-09-24 16:00:55,767 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:55,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 16:00:55,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:55,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-09-24 16:00:55,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 16:00:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 16:00:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 16:00:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:55,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:55,916 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:55,916 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:55,917 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:55,917 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:55,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:00:55,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:55,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:55,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:55,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:00:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:55,951 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:55,951 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:55,952 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:55,952 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:55,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:00:55,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:55,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:55,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:55,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:55,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:00:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:55,978 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:55,979 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:55,979 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:55,979 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:55,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:55,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:00:55,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:55,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:00:55,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:56,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:00:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:56,071 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:56,071 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:56,071 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:56,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:56,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:56,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 16:00:56,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:00:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:00:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:00:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:56,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 16:00:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:56,285 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:56,286 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:56,286 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:56,287 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:00:56,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 16:00:56,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:00:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:00:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:00:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:56,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 16:00:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:56,748 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:56,748 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:56,748 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:56,749 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:56,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 16:00:56,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 16:00:56,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:00:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 16:00:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 16:00:56,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 16:00:57,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520583778] [2020-09-24 16:00:57,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:57,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 16:00:57,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465536647] [2020-09-24 16:00:57,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 16:00:57,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:57,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 16:00:57,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:00:57,104 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 27 states. [2020-09-24 16:00:59,557 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-09-24 16:01:00,661 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-09-24 16:01:01,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:01,004 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2020-09-24 16:01:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-24 16:01:01,005 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 109 [2020-09-24 16:01:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:01,008 INFO L225 Difference]: With dead ends: 149 [2020-09-24 16:01:01,009 INFO L226 Difference]: Without dead ends: 126 [2020-09-24 16:01:01,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=516, Invalid=3024, Unknown=0, NotChecked=0, Total=3540 [2020-09-24 16:01:01,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-24 16:01:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 97. [2020-09-24 16:01:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-24 16:01:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-09-24 16:01:01,034 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 109 [2020-09-24 16:01:01,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:01,035 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-09-24 16:01:01,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 16:01:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-09-24 16:01:01,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-24 16:01:01,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:01,037 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:01,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:01:01,038 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:01,038 INFO L82 PathProgramCache]: Analyzing trace with hash -936170188, now seen corresponding path program 2 times [2020-09-24 16:01:01,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:01,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357704363] [2020-09-24 16:01:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:01,874 FATAL L256 erpolLogProxyWrapper]: Difference in size: 8 [2020-09-24 16:01:01,874 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -12 [2020-09-24 16:01:01,874 FATAL L256 erpolLogProxyWrapper]: Difference in width: 18 [2020-09-24 16:01:01,874 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:01,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-24 16:01:01,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-09-24 16:01:01,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-24 16:01:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 16:01:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 16:01:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:01,994 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:01,994 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:01,994 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:01,994 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:01,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:01:01,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:01,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:01,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:01:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:02,022 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:02,022 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:02,022 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:02,022 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:02,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:01:02,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:02,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:02,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:02,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:02,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:01:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:02,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:02,075 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:02,076 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:02,076 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:02,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:01:02,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:02,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 16:01:02,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:01:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 16:01:02,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:02,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:01:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:02,292 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:02,292 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:02,293 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:02,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:02,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:01:02,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:02,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 16:01:02,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:01:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:01:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:01:02,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 16:01:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:03,107 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:03,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:03,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:03,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:03,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:01:03,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 16:01:03,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:01:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:01:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:01:03,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:03,691 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-09-24 16:01:03,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 16:01:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:03,981 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:03,981 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:03,981 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:03,982 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:03,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 16:01:03,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:03,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 16:01:03,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 16:01:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 16:01:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 16:01:03,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 16:01:04,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357704363] [2020-09-24 16:01:04,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:04,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-24 16:01:04,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667836985] [2020-09-24 16:01:04,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-24 16:01:04,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:04,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-24 16:01:04,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1048, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 16:01:04,702 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 34 states. [2020-09-24 16:01:05,885 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-09-24 16:01:06,142 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2020-09-24 16:01:06,924 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-09-24 16:01:07,514 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-09-24 16:01:08,478 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-09-24 16:01:08,685 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-09-24 16:01:09,033 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-09-24 16:01:09,329 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-09-24 16:01:09,967 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-09-24 16:01:10,180 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-09-24 16:01:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:10,977 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2020-09-24 16:01:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 16:01:10,977 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 111 [2020-09-24 16:01:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:10,979 INFO L225 Difference]: With dead ends: 134 [2020-09-24 16:01:10,980 INFO L226 Difference]: Without dead ends: 121 [2020-09-24 16:01:10,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=472, Invalid=4084, Unknown=0, NotChecked=0, Total=4556 [2020-09-24 16:01:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-24 16:01:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 100. [2020-09-24 16:01:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 16:01:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-09-24 16:01:10,994 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 111 [2020-09-24 16:01:10,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:10,994 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-09-24 16:01:10,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-24 16:01:10,994 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-09-24 16:01:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-24 16:01:10,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:10,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:10,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:01:10,997 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:10,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:10,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1616055414, now seen corresponding path program 3 times [2020-09-24 16:01:10,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:10,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941746720] [2020-09-24 16:01:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:11,854 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:11,854 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:11,855 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:11,855 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:11,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 16:01:11,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-09-24 16:01:11,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-24 16:01:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:01:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 16:01:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,050 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,050 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,050 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,050 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:01:12,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:12,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:01:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,087 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,088 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,088 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 16:01:12,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:01:12,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:12,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:01:12,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:12,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:01:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,171 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,171 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,171 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:01:12,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 16:01:12,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:01:12,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:01:12,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:01:12,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:01:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,443 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,443 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,443 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,444 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:01:12,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 16:01:12,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:01:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:01:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:01:12,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 16:01:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,924 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,925 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,925 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,925 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 16:01:12,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 16:01:12,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:01:12,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:01:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:01:12,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:13,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 16:01:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:13,459 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:13,460 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:13,460 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:13,460 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:13,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 16:01:13,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:13,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 16:01:13,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:01:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 16:01:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 16:01:13,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 16:01:14,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941746720] [2020-09-24 16:01:14,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:14,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-09-24 16:01:14,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504507778] [2020-09-24 16:01:14,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-24 16:01:14,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:14,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-24 16:01:14,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 16:01:14,153 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 36 states. [2020-09-24 16:01:15,314 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-09-24 16:01:15,529 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54 [2020-09-24 16:01:16,635 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-09-24 16:01:16,868 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 57 [2020-09-24 16:01:17,444 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-09-24 16:01:17,656 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-09-24 16:01:17,980 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-09-24 16:01:18,271 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2020-09-24 16:01:18,730 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-09-24 16:01:18,960 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-09-24 16:01:19,229 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-09-24 16:01:19,615 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-09-24 16:01:19,922 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-09-24 16:01:20,473 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-09-24 16:01:20,713 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-09-24 16:01:21,124 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-09-24 16:01:21,367 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-09-24 16:01:21,587 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-09-24 16:01:21,823 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-09-24 16:01:22,224 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-09-24 16:01:22,497 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-09-24 16:01:22,732 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-09-24 16:01:22,989 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-09-24 16:01:23,374 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2020-09-24 16:01:23,610 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-09-24 16:01:23,847 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-24 16:01:24,064 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-09-24 16:01:24,490 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 16:01:24,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:24,693 INFO L93 Difference]: Finished difference Result 173 states and 179 transitions. [2020-09-24 16:01:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-09-24 16:01:24,694 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 119 [2020-09-24 16:01:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:24,696 INFO L225 Difference]: With dead ends: 173 [2020-09-24 16:01:24,696 INFO L226 Difference]: Without dead ends: 150 [2020-09-24 16:01:24,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=861, Invalid=5619, Unknown=0, NotChecked=0, Total=6480 [2020-09-24 16:01:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-24 16:01:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 131. [2020-09-24 16:01:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-24 16:01:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2020-09-24 16:01:24,711 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 119 [2020-09-24 16:01:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:24,711 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2020-09-24 16:01:24,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-24 16:01:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2020-09-24 16:01:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 16:01:24,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:24,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:24,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:01:24,714 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:24,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash 825201005, now seen corresponding path program 3 times [2020-09-24 16:01:24,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:24,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751329484] [2020-09-24 16:01:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:01:24,775 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:01:24,776 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:01:24,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:01:24,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:01:24 BoogieIcfgContainer [2020-09-24 16:01:24,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:01:24,821 INFO L168 Benchmark]: Toolchain (without parser) took 42526.49 ms. Allocated memory was 141.0 MB in the beginning and 549.5 MB in the end (delta: 408.4 MB). Free memory was 102.0 MB in the beginning and 344.6 MB in the end (delta: -242.5 MB). Peak memory consumption was 165.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:24,826 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-24 16:01:24,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.16 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 171.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:24,833 INFO L168 Benchmark]: Boogie Preprocessor took 75.95 ms. Allocated memory is still 205.0 MB. Free memory was 171.3 MB in the beginning and 168.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:24,834 INFO L168 Benchmark]: RCFGBuilder took 704.11 ms. Allocated memory is still 205.0 MB. Free memory was 168.5 MB in the beginning and 120.5 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:24,834 INFO L168 Benchmark]: TraceAbstraction took 41056.13 ms. Allocated memory was 205.0 MB in the beginning and 549.5 MB in the end (delta: 344.5 MB). Free memory was 119.6 MB in the beginning and 344.6 MB in the end (delta: -225.0 MB). Peak memory consumption was 119.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:24,843 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.16 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 171.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.95 ms. Allocated memory is still 205.0 MB. Free memory was 171.3 MB in the beginning and 168.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 704.11 ms. Allocated memory is still 205.0 MB. Free memory was 168.5 MB in the beginning and 120.5 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41056.13 ms. Allocated memory was 205.0 MB in the beginning and 549.5 MB in the end (delta: 344.5 MB). Free memory was 119.6 MB in the beginning and 344.6 MB in the end (delta: -225.0 MB). Peak memory consumption was 119.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L522] mlist *head; [L543] int i; [L544] mlist *mylist, *temp; [L545] CALL insert_list(mylist,2) [L531] l = (mlist*)malloc(sizeof(mlist)) [L532] l->key = k [L533] COND TRUE head==((void *)0) [L534] l->next = ((void *)0) [L539] head = l [L540] return 0; [L545] RET insert_list(mylist,2) [L546] CALL insert_list(mylist,5) [L531] l = (mlist*)malloc(sizeof(mlist)) [L532] l->key = k [L533] COND FALSE !(head==((void *)0)) [L536] l->key = k [L537] l->next = head [L539] head = l [L540] return 0; [L546] RET insert_list(mylist,5) [L547] CALL insert_list(mylist,1) [L531] l = (mlist*)malloc(sizeof(mlist)) [L532] l->key = k [L533] COND FALSE !(head==((void *)0)) [L536] l->key = k [L537] l->next = head [L539] head = l [L540] return 0; [L547] RET insert_list(mylist,1) [L548] CALL insert_list(mylist,3) [L531] l = (mlist*)malloc(sizeof(mlist)) [L532] l->key = k [L533] COND FALSE !(head==((void *)0)) [L536] l->key = k [L537] l->next = head [L539] head = l [L540] return 0; [L548] RET insert_list(mylist,3) [L549] CALL, EXPR search_list(head,2) [L524] l = head [L525] l!=((void *)0) && l->key!=k [L525] EXPR l->key [L525] l!=((void *)0) && l->key!=k [L525] COND TRUE l!=((void *)0) && l->key!=k [L526] EXPR l->next [L526] l = l->next [L525] l!=((void *)0) && l->key!=k [L525] EXPR l->key [L525] l!=((void *)0) && l->key!=k [L525] COND TRUE l!=((void *)0) && l->key!=k [L526] EXPR l->next [L526] l = l->next [L525] l!=((void *)0) && l->key!=k [L525] EXPR l->key [L525] l!=((void *)0) && l->key!=k [L525] COND TRUE l!=((void *)0) && l->key!=k [L526] EXPR l->next [L526] l = l->next [L525] l!=((void *)0) && l->key!=k [L525] EXPR l->key [L525] l!=((void *)0) && l->key!=k [L525] COND FALSE !(l!=((void *)0) && l->key!=k) [L528] return l; [L549] RET, EXPR search_list(head,2) [L549] temp = search_list(head,2) [L550] EXPR temp->key [L550] CALL __VERIFIER_assert(temp->key==1) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 40.9s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 27.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 483 SDtfs, 2204 SDslu, 2392 SDs, 0 SdLazy, 8860 SolverSat, 527 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 485 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 23.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 155 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 922 NumberOfCodeBlocks, 922 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 793 ConstructedInterpolants, 0 QuantifiedInterpolants, 986407 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 361/611 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...