/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=WIDEST --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 03:13:37,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:13:37,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:13:37,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:13:37,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:13:37,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:13:37,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:13:37,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:13:37,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:13:37,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:13:37,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:13:37,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:13:37,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:13:37,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:13:37,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:13:37,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:13:37,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:13:37,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:13:37,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:13:37,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:13:37,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:13:37,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:13:37,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:13:37,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:13:37,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:13:37,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:13:37,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:13:37,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:13:37,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:13:37,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:13:37,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:13:37,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:13:37,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:13:37,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:13:37,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:13:37,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:13:37,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:13:37,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:13:37,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:13:37,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:13:37,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:13:37,645 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 03:13:37,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:13:37,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:13:37,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:13:37,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:13:37,701 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:13:37,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:13:37,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:13:37,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:13:37,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:13:37,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:13:37,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:13:37,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:13:37,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:13:37,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:13:37,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:13:37,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:13:37,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:13:37,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:13:37,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:13:37,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:13:37,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:13:37,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:13:37,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:13:37,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:13:37,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:13:37,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:13:37,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:13:37,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:13:37,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:13:37,708 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:13:38,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:13:38,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:13:38,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:13:38,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:13:38,256 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:13:38,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 03:13:38,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15a5bc6e8/ce699a94088a401d8626338463ee6a0e/FLAGa2fd9bcf3 [2020-09-25 03:13:38,991 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:13:38,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 03:13:39,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15a5bc6e8/ce699a94088a401d8626338463ee6a0e/FLAGa2fd9bcf3 [2020-09-25 03:13:39,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15a5bc6e8/ce699a94088a401d8626338463ee6a0e [2020-09-25 03:13:39,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:13:39,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:13:39,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:39,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:13:39,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:13:39,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702e2c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39, skipping insertion in model container [2020-09-25 03:13:39,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:13:39,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:13:39,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:39,913 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:13:39,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:40,042 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:13:40,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:40 WrapperNode [2020-09-25 03:13:40,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:40,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:13:40,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:13:40,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:13:40,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:40" (1/1) ... [2020-09-25 03:13:40,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:40" (1/1) ... [2020-09-25 03:13:40,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:40" (1/1) ... [2020-09-25 03:13:40,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:40" (1/1) ... [2020-09-25 03:13:40,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:40" (1/1) ... [2020-09-25 03:13:40,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:40" (1/1) ... [2020-09-25 03:13:40,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:40" (1/1) ... [2020-09-25 03:13:40,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:13:40,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:13:40,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:13:40,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:13:40,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:40" (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 03:13:40,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:13:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:13:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:13:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 03:13:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 03:13:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 03:13:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 03:13:40,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 03:13:40,206 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-25 03:13:40,206 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-25 03:13:40,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:13:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:13:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:13:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:13:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:13:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:13:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:13:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:13:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:13:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:13:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:13:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:13:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:13:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:13:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:13:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:13:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:13:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:13:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:13:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 03:13:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 03:13:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 03:13:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 03:13:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 03:13:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:13:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:13:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:13:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:13:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:13:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:13:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:13:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:13:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:13:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:13:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:13:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:13:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:13:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:13:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:13:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:13:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:13:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:13:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:13:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:13:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:13:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:13:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:13:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:13:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:13:40,223 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:13:40,223 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:13:40,223 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:13:40,223 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:13:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:13:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:13:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:13:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:13:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:13:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:13:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:13:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:13:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:13:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:13:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:13:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:13:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:13:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:13:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:13:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:13:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:13:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:13:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:13:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:13:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:13:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:13:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:13:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:13:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:13:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:13:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:13:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:13:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:13:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:13:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:13:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:13:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:13:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:13:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:13:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:13:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:13:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:13:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:13:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:13:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:13:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:13:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:13:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:13:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:13:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:13:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:13:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:13:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:13:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:13:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:13:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:13:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:13:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:13:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:13:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:13:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:13:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-25 03:13:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:13:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:13:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-25 03:13:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:13:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:13:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:13:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:13:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:13:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:13:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:13:40,896 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:13:40,896 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 03:13:40,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:40 BoogieIcfgContainer [2020-09-25 03:13:40,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:13:40,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:13:40,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:13:40,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:13:40,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:13:39" (1/3) ... [2020-09-25 03:13:40,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a83a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:40, skipping insertion in model container [2020-09-25 03:13:40,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:40" (2/3) ... [2020-09-25 03:13:40,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a83a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:40, skipping insertion in model container [2020-09-25 03:13:40,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:40" (3/3) ... [2020-09-25 03:13:40,912 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-25 03:13:40,924 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:13:40,935 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:13:40,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:13:40,981 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:13:40,982 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:13:40,982 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:13:40,982 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:13:40,982 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:13:40,982 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:13:40,982 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:13:40,982 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:13:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-25 03:13:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 03:13:41,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:41,018 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 03:13:41,018 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:41,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:41,025 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-25 03:13:41,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:41,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122157342] [2020-09-25 03:13:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 03:13:46,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:46,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 03:13:46,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:13:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 03:13:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:13:46,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:13:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:46,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:13:46,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:46,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:13:46,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:46,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:46,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:13:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:46,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 03:13:46,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:13:46,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:46,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:46,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:13:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 03:13:46,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:46,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 03:13:46,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:46,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:46,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:13:46,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:46,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 03:13:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:46,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 03:13:46,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:46,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 03:13:46,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:13:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:13:46,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:46,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 03:13:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 03:13:46,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:46,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 03:13:46,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:13:46,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:46,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:46,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 03:13:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:46,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:13:46,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:13:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:13:46,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 03:13:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 03:13:46,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122157342] [2020-09-25 03:13:46,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:46,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:13:46,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546927255] [2020-09-25 03:13:46,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:13:46,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:46,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:13:46,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:13:46,848 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 9 states. [2020-09-25 03:13:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:47,629 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2020-09-25 03:13:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:13:47,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-25 03:13:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:47,650 INFO L225 Difference]: With dead ends: 187 [2020-09-25 03:13:47,651 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 03:13:47,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:13:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 03:13:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-25 03:13:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 03:13:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-25 03:13:47,740 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 82 [2020-09-25 03:13:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:47,740 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-25 03:13:47,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:13:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-25 03:13:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 03:13:47,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:47,746 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 03:13:47,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:13:47,747 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:47,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-25 03:13:47,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:47,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050038841] [2020-09-25 03:13:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:47,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:48,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:48,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:48,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 03:13:48,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:13:48,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 989 [2020-09-25 03:13:48,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:13:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 03:13:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:13:48,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:48,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:48,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:48,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:13:48,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:13:48,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:13:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:48,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:48,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 03:13:48,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:48,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:13:48,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:48,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:48,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:48,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:13:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:48,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:48,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:13:48,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:13:48,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:48,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 03:13:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:48,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:48,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:13:48,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:48,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:13:48,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:48,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:48,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 03:13:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:49,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:49,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:13:49,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 03:13:49,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 03:13:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:49,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:49,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 03:13:49,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:13:49,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 03:13:49,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 03:13:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:49,243 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 03:13:49,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050038841] [2020-09-25 03:13:49,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:49,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 03:13:49,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876865757] [2020-09-25 03:13:49,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:13:49,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:49,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:13:49,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:13:49,248 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-25 03:13:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:49,881 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-25 03:13:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:13:49,882 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 03:13:49,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:49,886 INFO L225 Difference]: With dead ends: 113 [2020-09-25 03:13:49,886 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 03:13:49,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:13:49,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 03:13:49,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-25 03:13:49,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 03:13:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 03:13:49,912 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-25 03:13:49,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:49,913 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 03:13:49,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:13:49,913 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 03:13:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 03:13:49,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:49,919 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 03:13:49,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:13:49,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:49,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:49,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-25 03:13:49,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:49,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849906144] [2020-09-25 03:13:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:50,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:50,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:50,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 03:13:50,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:50,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-09-25 03:13:50,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:51,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:13:51,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 03:13:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:13:51,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:51,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:51,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:13:51,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:51,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:13:51,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:51,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:51,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:51,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:51,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:13:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:51,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 03:13:51,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:13:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:51,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:13:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:51,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:13:51,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:51,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 03:13:51,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 03:13:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:13:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:13:51,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 03:13:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:51,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:13:51,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:51,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 03:13:51,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:13:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 03:13:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:51,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 03:13:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:51,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 03:13:51,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:51,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 03:13:51,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:51,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:13:51,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:13:51,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:13:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:51,771 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 03:13:51,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849906144] [2020-09-25 03:13:51,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:51,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 03:13:51,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216324724] [2020-09-25 03:13:51,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:13:51,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:51,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:13:51,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:13:51,775 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-25 03:13:52,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:52,646 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-09-25 03:13:52,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:13:52,647 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 03:13:52,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:52,649 INFO L225 Difference]: With dead ends: 95 [2020-09-25 03:13:52,649 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 03:13:52,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2020-09-25 03:13:52,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 03:13:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-25 03:13:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 03:13:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 03:13:52,659 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-25 03:13:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:52,660 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 03:13:52,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:13:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 03:13:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 03:13:52,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:52,662 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 03:13:52,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:13:52,663 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:52,663 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-25 03:13:52,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:52,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833810663] [2020-09-25 03:13:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:52,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:53,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:55,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:57,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:57,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 03:13:57,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 03:13:57,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:57,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 03:13:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 03:13:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 03:13:57,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:57,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:57,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:57,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:57,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:13:57,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:13:57,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:57,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:13:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:57,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:57,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 03:13:57,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:13:57,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:57,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:13:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:57,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:57,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:13:57,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:57,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:13:57,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:57,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 03:13:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:57,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:58,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:58,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:13:58,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:58,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 03:13:58,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:13:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 03:13:58,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:58,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 03:13:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:58,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:58,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:13:58,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 03:13:58,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:13:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:13:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:13:58,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:58,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 03:13:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:58,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:58,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 03:13:58,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:58,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 03:13:58,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:13:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:13:58,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 39 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 03:13:59,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833810663] [2020-09-25 03:13:59,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:59,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 03:13:59,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429997575] [2020-09-25 03:13:59,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 03:13:59,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:59,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 03:13:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-09-25 03:13:59,218 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 27 states. [2020-09-25 03:14:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:02,079 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2020-09-25 03:14:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 03:14:02,080 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 99 [2020-09-25 03:14:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:02,082 INFO L225 Difference]: With dead ends: 113 [2020-09-25 03:14:02,082 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 03:14:02,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=252, Invalid=2298, Unknown=0, NotChecked=0, Total=2550 [2020-09-25 03:14:02,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 03:14:02,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2020-09-25 03:14:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 03:14:02,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2020-09-25 03:14:02,112 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 99 [2020-09-25 03:14:02,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:02,113 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2020-09-25 03:14:02,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 03:14:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2020-09-25 03:14:02,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 03:14:02,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:02,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:14:02,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:14:02,122 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:02,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:02,123 INFO L82 PathProgramCache]: Analyzing trace with hash -891812434, now seen corresponding path program 2 times [2020-09-25 03:14:02,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:02,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718478760] [2020-09-25 03:14:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:02,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:02,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:03,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:07,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 03:14:07,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:14:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 03:14:07,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 03:14:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 03:14:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:14:07,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:07,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:07,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:14:07,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:14:07,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:07,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:07,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:14:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:07,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:07,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 03:14:07,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:07,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:14:07,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:07,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:07,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:14:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:07,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:07,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:14:07,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:07,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 03:14:07,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:07,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:14:07,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:07,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:14:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:07,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 03:14:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:07,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:07,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:07,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:14:07,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 03:14:07,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:14:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:14:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:14:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:07,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 03:14:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:08,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:08,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:14:08,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:08,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 03:14:08,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:14:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:14:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:14:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:08,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 03:14:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:08,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:08,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 03:14:08,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:14:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 03:14:08,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:14:08,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 03:14:08,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:14:08,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 40 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 03:14:08,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718478760] [2020-09-25 03:14:08,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:08,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 03:14:08,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25767879] [2020-09-25 03:14:08,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 03:14:08,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:08,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 03:14:08,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-09-25 03:14:08,794 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 27 states. [2020-09-25 03:14:11,307 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-09-25 03:14:11,536 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-09-25 03:14:11,690 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-09-25 03:14:11,979 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-09-25 03:14:12,203 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-09-25 03:14:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:13,022 INFO L93 Difference]: Finished difference Result 161 states and 169 transitions. [2020-09-25 03:14:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 03:14:13,023 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 107 [2020-09-25 03:14:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:13,030 INFO L225 Difference]: With dead ends: 161 [2020-09-25 03:14:13,030 INFO L226 Difference]: Without dead ends: 137 [2020-09-25 03:14:13,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=578, Invalid=3454, Unknown=0, NotChecked=0, Total=4032 [2020-09-25 03:14:13,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-25 03:14:13,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2020-09-25 03:14:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 03:14:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-09-25 03:14:13,046 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 107 [2020-09-25 03:14:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:13,047 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-09-25 03:14:13,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 03:14:13,047 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-09-25 03:14:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 03:14:13,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:13,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:14:13,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:14:13,050 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:13,050 INFO L82 PathProgramCache]: Analyzing trace with hash -936170188, now seen corresponding path program 1 times [2020-09-25 03:14:13,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:13,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414509578] [2020-09-25 03:14:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:13,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:16,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:16,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 03:14:16,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:16,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3178 [2020-09-25 03:14:16,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:16,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 03:14:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 03:14:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 03:14:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:16,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:16,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:14:16,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:14:16,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:14:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:16,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:16,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:16,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 03:14:16,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:14:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:16,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:16,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:14:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:16,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:16,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:16,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:14:16,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:16,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 03:14:16,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:14:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 03:14:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:16,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 03:14:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:16,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:16,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:14:16,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 03:14:16,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:14:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:14:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:14:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 03:14:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:17,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:17,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:14:17,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-25 03:14:17,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:14:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:14:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:14:17,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:18,484 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-09-25 03:14:18,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 03:14:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:18,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:18,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:18,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 03:14:18,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 03:14:18,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:14:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:14:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 03:14:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 51 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 03:14:19,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414509578] [2020-09-25 03:14:19,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:19,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-25 03:14:19,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827538067] [2020-09-25 03:14:19,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-25 03:14:19,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:19,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-25 03:14:19,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 03:14:19,472 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 34 states. [2020-09-25 03:14:20,067 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-09-25 03:14:20,244 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-09-25 03:14:20,687 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-09-25 03:14:20,979 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 67 [2020-09-25 03:14:21,246 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-09-25 03:14:21,900 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-09-25 03:14:22,379 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-09-25 03:14:22,575 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-09-25 03:14:24,451 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-09-25 03:14:24,656 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-09-25 03:14:25,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:25,347 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2020-09-25 03:14:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 03:14:25,348 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 111 [2020-09-25 03:14:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:25,350 INFO L225 Difference]: With dead ends: 141 [2020-09-25 03:14:25,351 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 03:14:25,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=464, Invalid=4092, Unknown=0, NotChecked=0, Total=4556 [2020-09-25 03:14:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 03:14:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2020-09-25 03:14:25,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 03:14:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2020-09-25 03:14:25,365 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 111 [2020-09-25 03:14:25,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:25,366 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2020-09-25 03:14:25,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-25 03:14:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2020-09-25 03:14:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 03:14:25,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:25,367 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:14:25,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:14:25,368 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:25,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:25,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1616055414, now seen corresponding path program 3 times [2020-09-25 03:14:25,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:25,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546737897] [2020-09-25 03:14:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking...