/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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 [2020-09-25 08:57:31,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:57:31,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:57:31,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:57:31,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:57:31,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:57:31,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:57:31,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:57:31,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:57:31,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:57:31,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:57:31,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:57:31,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:57:31,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:57:31,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:57:31,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:57:31,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:57:31,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:57:31,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:57:31,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:57:31,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:57:31,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:57:31,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:57:31,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:57:31,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:57:31,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:57:31,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:57:31,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:57:31,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:57:31,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:57:31,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:57:31,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:57:31,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:57:31,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:57:31,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:57:31,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:57:31,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:57:31,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:57:31,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:57:31,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:57:31,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:57:31,565 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 [2020-09-25 08:57:31,594 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:57:31,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:57:31,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:57:31,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:57:31,596 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:57:31,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:57:31,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:57:31,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:57:31,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:57:31,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:57:31,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:57:31,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:57:31,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:57:31,598 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:57:31,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:57:31,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:57:31,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:57:31,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:57:31,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:57:31,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:57:31,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:57:31,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:57:31,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:57:31,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:57:31,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:57:31,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:57:31,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:57:31,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:57:31,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:57:31,601 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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:57:32,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:57:32,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:57:32,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:57:32,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:57:32,120 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:57:32,121 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 08:57:32,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b2c22a8/def2146b9a794a6c973948bab1420c40/FLAG93312c322 [2020-09-25 08:57:32,871 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:57:32,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 08:57:32,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b2c22a8/def2146b9a794a6c973948bab1420c40/FLAG93312c322 [2020-09-25 08:57:33,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b2c22a8/def2146b9a794a6c973948bab1420c40 [2020-09-25 08:57:33,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:57:33,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:57:33,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:33,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:57:33,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:57:33,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:33" (1/1) ... [2020-09-25 08:57:33,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33, skipping insertion in model container [2020-09-25 08:57:33,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:33" (1/1) ... [2020-09-25 08:57:33,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:57:33,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:57:33,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:33,748 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:57:33,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:33,861 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:57:33,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33 WrapperNode [2020-09-25 08:57:33,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:33,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:57:33,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:57:33,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:57:33,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33" (1/1) ... [2020-09-25 08:57:33,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33" (1/1) ... [2020-09-25 08:57:33,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33" (1/1) ... [2020-09-25 08:57:33,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33" (1/1) ... [2020-09-25 08:57:33,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33" (1/1) ... [2020-09-25 08:57:33,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33" (1/1) ... [2020-09-25 08:57:33,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33" (1/1) ... [2020-09-25 08:57:33,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:57:33,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:57:33,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:57:33,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:57:33,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33" (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 [2020-09-25 08:57:34,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:57:34,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:57:34,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:57:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 08:57:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 08:57:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 08:57:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 08:57:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 08:57:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-25 08:57:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-25 08:57:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:57:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:57:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:57:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 08:57:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 08:57:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 08:57:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 08:57:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 08:57:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 08:57:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 08:57:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 08:57:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 08:57:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 08:57:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 08:57:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 08:57:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 08:57:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 08:57:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 08:57:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 08:57:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 08:57:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 08:57:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 08:57:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 08:57:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 08:57:34,028 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 08:57:34,028 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 08:57:34,028 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 08:57:34,028 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 08:57:34,028 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 08:57:34,029 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 08:57:34,029 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 08:57:34,029 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 08:57:34,029 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 08:57:34,029 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 08:57:34,029 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 08:57:34,029 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 08:57:34,030 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 08:57:34,030 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 08:57:34,030 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 08:57:34,030 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 08:57:34,030 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 08:57:34,031 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 08:57:34,031 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 08:57:34,031 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 08:57:34,031 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 08:57:34,031 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 08:57:34,031 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 08:57:34,031 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 08:57:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 08:57:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 08:57:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 08:57:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 08:57:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 08:57:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 08:57:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 08:57:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 08:57:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 08:57:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 08:57:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:57:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:57:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 08:57:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:57:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 08:57:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 08:57:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 08:57:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 08:57:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:57:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 08:57:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 08:57:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 08:57:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:57:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 08:57:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 08:57:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 08:57:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 08:57:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 08:57:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 08:57:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 08:57:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 08:57:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 08:57:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 08:57:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 08:57:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 08:57:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 08:57:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 08:57:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 08:57:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 08:57:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 08:57:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 08:57:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 08:57:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 08:57:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 08:57:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 08:57:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 08:57:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 08:57:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 08:57:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 08:57:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 08:57:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 08:57:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 08:57:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 08:57:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 08:57:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 08:57:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 08:57:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 08:57:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 08:57:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 08:57:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 08:57:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 08:57:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 08:57:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-25 08:57:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:57:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:57:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-25 08:57:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:57:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:57:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:57:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:57:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:57:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:57:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:57:34,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:57:34,664 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 08:57:34,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:34 BoogieIcfgContainer [2020-09-25 08:57:34,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:57:34,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:57:34,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:57:34,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:57:34,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:57:33" (1/3) ... [2020-09-25 08:57:34,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0cb6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:34, skipping insertion in model container [2020-09-25 08:57:34,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:33" (2/3) ... [2020-09-25 08:57:34,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0cb6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:34, skipping insertion in model container [2020-09-25 08:57:34,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:34" (3/3) ... [2020-09-25 08:57:34,680 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-25 08:57:34,692 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:57:34,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:57:34,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:57:34,752 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:57:34,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:57:34,753 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:57:34,753 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:57:34,753 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:57:34,753 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:57:34,753 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:57:34,753 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:57:34,778 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-25 08:57:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 08:57:34,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:34,792 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] [2020-09-25 08:57:34,792 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:34,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:34,800 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-25 08:57:34,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:34,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251916436] [2020-09-25 08:57:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:35,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:35,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:35,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 08:57:40,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 08:57:40,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 08:57:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:57:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:57:40,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:40,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:57:40,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:40,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:57:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:40,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:40,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:57:40,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:40,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:40,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:57:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:40,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:40,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:57:40,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:40,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:57:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:40,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:57:40,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:40,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:40,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:57:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:40,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 08:57:40,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 08:57:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:57:40,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:40,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:57:40,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:57:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 08:57:40,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251916436] [2020-09-25 08:57:40,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:40,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:40,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154597425] [2020-09-25 08:57:40,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:40,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:40,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:40,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:40,436 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-09-25 08:57:40,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:40,661 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-09-25 08:57:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:57:40,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-09-25 08:57:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:40,677 INFO L225 Difference]: With dead ends: 100 [2020-09-25 08:57:40,678 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 08:57:40,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:40,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 08:57:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 08:57:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 08:57:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-09-25 08:57:40,750 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 82 [2020-09-25 08:57:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:40,753 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-09-25 08:57:40,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-09-25 08:57:40,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 08:57:40,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:40,758 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, 1, 1, 1, 1] [2020-09-25 08:57:40,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:57:40,758 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:40,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1818163735, now seen corresponding path program 1 times [2020-09-25 08:57:40,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:40,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732169467] [2020-09-25 08:57:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:42,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:45,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:45,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 08:57:45,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:45,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 08:57:45,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:45,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:45,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:57:45,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:57:45,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 08:57:45,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:45,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:45,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:45,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:57:45,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:57:45,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:45,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:45,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:45,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:45,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:45,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:57:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:46,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:46,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 08:57:46,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:46,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:46,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:46,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:57:46,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:57:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:46,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:46,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:46,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 08:57:46,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:46,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:57:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:57:46,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:57:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:46,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:46,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:57:46,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:46,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:57:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:46,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:46,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:57:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:46,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:46,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:46,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 08:57:46,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:46,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:57:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:46,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:46,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 08:57:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:46,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:46,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:57:46,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:46,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:57:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 08:57:46,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732169467] [2020-09-25 08:57:46,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:57:46,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:57:46,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359608571] [2020-09-25 08:57:46,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:57:46,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:46,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:57:46,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:57:46,265 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 9 states. [2020-09-25 08:57:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:46,776 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2020-09-25 08:57:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:57:46,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-25 08:57:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:46,780 INFO L225 Difference]: With dead ends: 140 [2020-09-25 08:57:46,780 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 08:57:46,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:57:46,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 08:57:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-25 08:57:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 08:57:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-25 08:57:46,799 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 86 [2020-09-25 08:57:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:46,799 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-25 08:57:46,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:57:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-25 08:57:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 08:57:46,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:46,802 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] [2020-09-25 08:57:46,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:57:46,802 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:46,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-25 08:57:46,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:46,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999928271] [2020-09-25 08:57:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:47,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 08:57:47,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:57:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-09-25 08:57:47,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:47,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:57:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 08:57:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:57:47,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:47,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:57:47,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:47,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:57:47,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:47,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:47,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:47,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:57:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:47,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:47,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:47,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:57:47,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:47,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:57:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:47,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:57:47,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:47,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:57:47,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:47,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:47,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:47,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:57:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:47,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:57:47,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 08:57:47,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:47,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:47,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:47,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 08:57:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:47,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:47,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:57:47,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:47,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 08:57:47,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:47,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:48,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 08:57:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:48,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:48,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:48,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:48,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:57:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 08:57:48,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:48,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 08:57:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 08:57:48,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999928271] [2020-09-25 08:57:48,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:48,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 08:57:48,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879454345] [2020-09-25 08:57:48,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:57:48,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:48,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:57:48,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:57:48,168 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-25 08:57:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:48,977 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-25 08:57:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:57:48,977 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 08:57:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:48,981 INFO L225 Difference]: With dead ends: 113 [2020-09-25 08:57:48,982 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 08:57:48,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-09-25 08:57:48,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 08:57:48,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-25 08:57:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 08:57:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 08:57:48,994 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-25 08:57:48,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:48,995 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 08:57:48,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:57:48,995 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 08:57:48,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 08:57:48,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:48,997 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] [2020-09-25 08:57:48,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:57:48,998 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:48,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:48,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-25 08:57:48,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:48,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713968162] [2020-09-25 08:57:48,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:49,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:49,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 08:57:49,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-09-25 08:57:49,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:49,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:57:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 08:57:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:57:49,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:49,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:49,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:50,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:50,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:57:50,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:50,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:57:50,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:50,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:50,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:50,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:50,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:50,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:57:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:50,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:50,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:57:50,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:50,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:50,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:57:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:50,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:50,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:50,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:57:50,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:50,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 08:57:50,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:50,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:57:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:50,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:50,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:57:50,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 08:57:50,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:50,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:50,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 08:57:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:50,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:50,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:50,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:57:50,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:50,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 08:57:50,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:50,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:50,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:57:50,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:57:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:57:50,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 08:57:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:50,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:50,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:57:50,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 08:57:50,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:50,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:57:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 08:57:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 08:57:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 08:57:50,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713968162] [2020-09-25 08:57:50,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:50,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 08:57:50,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812734475] [2020-09-25 08:57:50,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 08:57:50,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:50,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 08:57:50,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:57:50,544 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-25 08:57:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:51,429 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-09-25 08:57:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:57:51,430 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 08:57:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:51,433 INFO L225 Difference]: With dead ends: 95 [2020-09-25 08:57:51,433 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 08:57:51,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2020-09-25 08:57:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 08:57:51,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-25 08:57:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 08:57:51,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 08:57:51,452 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-25 08:57:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:51,452 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 08:57:51,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 08:57:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 08:57:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 08:57:51,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:51,461 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] [2020-09-25 08:57:51,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:57:51,462 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:51,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:51,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-25 08:57:51,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:51,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793618904] [2020-09-25 08:57:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:51,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:51,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:52,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:56,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:56,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 08:57:56,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 08:57:56,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:56,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:57:56,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 08:57:56,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:57:56,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:56,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:56,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:56,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:57:56,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:57:56,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:56,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:56,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:57:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:56,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:56,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:57:56,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:57:56,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:56,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:57:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:56,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:56,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:57:56,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:57:56,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:56,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:56,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:56,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:57:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:56,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:56,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:56,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:57:56,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 08:57:56,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:56,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:56,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 08:57:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:56,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:56,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:57:56,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 08:57:56,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:56,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:57:56,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:57:56,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 08:57:56,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 08:57:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:57,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:57,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:57,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:57:57,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:57:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 08:57:57,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:57,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:57:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 08:57:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 08:57:57,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 08:57:57,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793618904] [2020-09-25 08:57:57,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:57:57,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:57:57,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235277734] [2020-09-25 08:57:57,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:57:57,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:57,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:57:57,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:57:57,241 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 16 states. [2020-09-25 08:57:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:58,929 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-09-25 08:57:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 08:57:58,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-09-25 08:57:58,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:58,932 INFO L225 Difference]: With dead ends: 134 [2020-09-25 08:57:58,932 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 08:57:58,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=1230, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 08:57:58,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 08:57:58,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 87. [2020-09-25 08:57:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 08:57:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-09-25 08:57:58,947 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 99 [2020-09-25 08:57:58,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:58,951 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-09-25 08:57:58,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:57:58,951 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-09-25 08:57:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 08:57:58,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:58,953 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] [2020-09-25 08:57:58,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:57:58,953 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:58,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:58,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1242921541, now seen corresponding path program 1 times [2020-09-25 08:57:58,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:58,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571220743] [2020-09-25 08:57:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:59,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:04,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:04,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 08:58:04,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:58:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 08:58:04,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:04,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 08:58:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 08:58:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 08:58:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:58:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:58:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:04,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:04,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:58:04,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:58:04,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:04,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:04,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:58:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:04,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:04,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:58:04,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:58:04,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:04,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:04,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:04,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:04,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:58:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:04,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:04,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:04,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:58:04,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:04,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:58:04,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:04,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:58:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:04,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:04,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:04,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:58:04,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 08:58:04,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:04,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:58:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:58:04,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:04,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 08:58:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:04,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:04,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:58:04,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 08:58:04,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:04,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:58:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:58:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 08:58:04,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:58:04,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 08:58:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:04,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:05,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:05,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 08:58:05,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:58:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 08:58:05,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:05,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:58:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 08:58:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:58:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 08:58:05,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571220743] [2020-09-25 08:58:05,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:58:05,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 08:58:05,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178241481] [2020-09-25 08:58:05,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 08:58:05,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:58:05,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 08:58:05,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-09-25 08:58:05,410 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 26 states. [2020-09-25 08:58:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:58:07,829 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-09-25 08:58:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 08:58:07,829 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 101 [2020-09-25 08:58:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:58:07,831 INFO L225 Difference]: With dead ends: 119 [2020-09-25 08:58:07,831 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 08:58:07,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=247, Invalid=2203, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 08:58:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 08:58:07,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 90. [2020-09-25 08:58:07,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 08:58:07,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-09-25 08:58:07,860 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 101 [2020-09-25 08:58:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:58:07,861 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-09-25 08:58:07,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 08:58:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-09-25 08:58:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 08:58:07,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:58:07,862 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] [2020-09-25 08:58:07,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:58:07,863 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:58:07,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:58:07,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1667050223, now seen corresponding path program 2 times [2020-09-25 08:58:07,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:58:07,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394861447] [2020-09-25 08:58:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:58:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:07,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:08,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:10,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:12,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:12,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 08:58:12,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:58:12,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 08:58:12,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:12,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 08:58:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 08:58:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 08:58:12,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:58:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:58:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:13,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:13,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:13,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:58:13,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:58:13,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:13,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:58:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:58:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:13,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:13,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:13,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:58:13,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:13,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:58:13,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:13,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:58:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:13,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:58:13,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:58:13,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:58:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:13,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:13,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:13,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:58:13,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:13,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 08:58:13,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:13,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:13,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:58:13,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:58:13,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:58:13,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:58:13,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:58:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:13,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:13,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:13,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:58:13,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:13,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 08:58:13,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:13,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:58:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:58:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 08:58:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 08:58:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:13,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:13,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:13,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:58:13,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:58:13,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 08:58:13,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:13,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:13,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:58:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:58:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 08:58:13,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:58:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 08:58:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:14,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:58:14,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:58:14,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:58:14,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 08:58:14,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:58:14,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:58:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:58:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 08:58:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:58:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:58:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 08:58:14,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394861447] [2020-09-25 08:58:14,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:58:14,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 08:58:14,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782485075] [2020-09-25 08:58:14,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 08:58:14,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:58:14,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 08:58:14,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-09-25 08:58:14,810 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 27 states. [2020-09-25 08:58:16,394 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-09-25 08:58:17,143 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-09-25 08:58:17,739 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-09-25 08:58:17,918 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-09-25 08:58:18,167 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-09-25 08:58:18,626 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-09-25 08:58:18,913 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-09-25 08:58:19,110 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-09-25 08:58:19,286 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-09-25 08:58:19,488 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-09-25 08:58:19,817 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-09-25 08:58:20,002 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54