/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:23,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:23,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:23,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:23,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:23,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:23,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:23,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:23,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:23,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:23,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:23,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:23,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:23,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:23,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:23,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:23,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:23,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:23,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:23,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:23,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:23,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:23,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:23,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:23,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:23,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:23,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:23,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:23,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:23,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:23,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:23,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:23,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:23,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:23,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:23,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:23,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:23,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:23,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:23,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:23,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:23,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:59:23,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:23,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:23,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:23,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:23,477 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:23,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:23,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:23,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:23,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:23,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:23,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:23,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:23,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:23,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:23,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:23,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:23,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:23,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:23,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:23,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:23,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:23,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:23,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:23,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:23,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:23,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:23,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:23,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:23,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:23,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:59:23,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:24,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:24,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:24,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:24,007 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:24,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 08:59:24,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b1a6d171/46495f1830ae4087b7b237d1557dc6e6/FLAGcc5be208f [2020-09-25 08:59:24,775 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:24,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 08:59:24,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b1a6d171/46495f1830ae4087b7b237d1557dc6e6/FLAGcc5be208f [2020-09-25 08:59:24,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b1a6d171/46495f1830ae4087b7b237d1557dc6e6 [2020-09-25 08:59:25,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:25,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:25,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:25,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:25,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:25,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:24" (1/1) ... [2020-09-25 08:59:25,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310d9643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25, skipping insertion in model container [2020-09-25 08:59:25,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:24" (1/1) ... [2020-09-25 08:59:25,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:25,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:25,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:25,602 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:25,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:25,741 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:25,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25 WrapperNode [2020-09-25 08:59:25,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:25,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:25,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:25,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:25,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25" (1/1) ... [2020-09-25 08:59:25,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25" (1/1) ... [2020-09-25 08:59:25,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25" (1/1) ... [2020-09-25 08:59:25,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25" (1/1) ... [2020-09-25 08:59:25,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25" (1/1) ... [2020-09-25 08:59:25,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25" (1/1) ... [2020-09-25 08:59:25,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25" (1/1) ... [2020-09-25 08:59:25,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:25,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:25,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:25,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:25,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:25,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:25,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:25,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 08:59:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 08:59:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 08:59:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 08:59:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 08:59:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 08:59:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-25 08:59:25,901 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-25 08:59:25,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 08:59:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 08:59:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 08:59:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 08:59:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 08:59:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 08:59:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 08:59:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 08:59:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 08:59:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 08:59:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 08:59:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 08:59:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 08:59:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 08:59:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 08:59:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 08:59:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 08:59:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 08:59:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 08:59:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 08:59:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 08:59:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 08:59:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 08:59:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 08:59:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 08:59:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 08:59:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 08:59:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 08:59:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 08:59:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 08:59:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 08:59:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 08:59:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 08:59:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 08:59:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 08:59:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 08:59:25,910 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 08:59:25,910 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 08:59:25,910 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 08:59:25,910 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 08:59:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 08:59:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 08:59:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 08:59:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 08:59:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 08:59:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 08:59:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 08:59:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 08:59:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 08:59:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 08:59:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 08:59:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 08:59:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:59:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:59:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 08:59:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:59:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 08:59:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 08:59:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 08:59:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 08:59:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 08:59:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:59:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 08:59:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 08:59:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 08:59:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 08:59:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 08:59:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 08:59:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 08:59:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 08:59:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 08:59:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 08:59:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 08:59:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 08:59:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 08:59:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 08:59:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 08:59:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 08:59:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 08:59:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 08:59:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 08:59:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 08:59:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 08:59:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 08:59:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 08:59:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 08:59:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 08:59:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 08:59:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 08:59:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 08:59:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 08:59:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 08:59:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 08:59:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 08:59:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 08:59:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 08:59:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 08:59:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 08:59:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 08:59:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 08:59:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 08:59:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 08:59:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 08:59:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 08:59:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 08:59:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 08:59:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:59:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:59:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:59:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 08:59:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 08:59:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:59:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:59:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-25 08:59:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:59:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-25 08:59:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:26,382 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 08:59:26,555 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:26,556 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 08:59:26,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:26 BoogieIcfgContainer [2020-09-25 08:59:26,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:26,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:26,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:26,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:26,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:24" (1/3) ... [2020-09-25 08:59:26,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53323949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:26, skipping insertion in model container [2020-09-25 08:59:26,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:25" (2/3) ... [2020-09-25 08:59:26,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53323949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:26, skipping insertion in model container [2020-09-25 08:59:26,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:26" (3/3) ... [2020-09-25 08:59:26,572 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-25 08:59:26,584 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:26,596 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:59:26,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:59:26,662 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:26,663 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:26,663 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:26,663 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:26,663 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:26,663 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:26,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:26,664 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:26,700 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 08:59:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 08:59:26,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:26,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:26,719 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:26,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:26,728 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-25 08:59:26,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:26,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493584936] [2020-09-25 08:59:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:27,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:59:27,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:59:27,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-09-25 08:59:27,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:27,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 08:59:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:59:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:27,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:27,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:27,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:59:27,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:27,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:59:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:27,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:27,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:59:27,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:27,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:59:27,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:27,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:59:27,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:27,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:59:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:27,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:59:27,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:59:27,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:27,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 08:59:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:27,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:27,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493584936] [2020-09-25 08:59:27,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:27,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:59:27,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132610424] [2020-09-25 08:59:27,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:59:27,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:27,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:59:27,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:59:27,955 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-09-25 08:59:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:28,396 INFO L93 Difference]: Finished difference Result 230 states and 285 transitions. [2020-09-25 08:59:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:59:28,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-25 08:59:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:28,419 INFO L225 Difference]: With dead ends: 230 [2020-09-25 08:59:28,419 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 08:59:28,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:59:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 08:59:28,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 84. [2020-09-25 08:59:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 08:59:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-09-25 08:59:28,505 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 38 [2020-09-25 08:59:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:28,506 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-09-25 08:59:28,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:59:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-09-25 08:59:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 08:59:28,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:28,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:28,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:59:28,510 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash -613399993, now seen corresponding path program 1 times [2020-09-25 08:59:28,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:28,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313893737] [2020-09-25 08:59:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:28,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:28,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:30,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:59:30,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:59:30,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1754 [2020-09-25 08:59:30,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:30,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:59:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:59:30,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:30,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:30,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:30,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:59:30,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:30,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:30,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:59:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:30,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:30,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:59:30,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 08:59:30,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:30,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:30,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:59:30,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:59:30,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:30,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:59:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:30,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:30,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:59:30,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 08:59:30,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:30,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 08:59:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:59:30,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:30,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313893737] [2020-09-25 08:59:30,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:30,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 08:59:30,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629554980] [2020-09-25 08:59:30,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:59:30,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:30,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:59:30,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:59:30,541 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 10 states. [2020-09-25 08:59:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:31,180 INFO L93 Difference]: Finished difference Result 172 states and 186 transitions. [2020-09-25 08:59:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 08:59:31,181 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-09-25 08:59:31,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:31,183 INFO L225 Difference]: With dead ends: 172 [2020-09-25 08:59:31,183 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 08:59:31,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:59:31,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 08:59:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 95. [2020-09-25 08:59:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 08:59:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2020-09-25 08:59:31,216 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 38 [2020-09-25 08:59:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:31,217 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2020-09-25 08:59:31,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:59:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2020-09-25 08:59:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 08:59:31,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:31,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:31,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:59:31,227 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:31,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:31,231 INFO L82 PathProgramCache]: Analyzing trace with hash 281898851, now seen corresponding path program 1 times [2020-09-25 08:59:31,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:31,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682446873] [2020-09-25 08:59:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:31,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:32,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 08:59:36,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:59:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 08:59:36,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:59:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 08:59:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:59:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:36,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:36,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:36,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:36,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:36,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:59:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:59:36,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 08:59:36,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:59:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:59:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:59:36,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:59:36,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:59:36,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:36,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 08:59:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:59:36,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 08:59:36,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:59:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 08:59:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:36,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:59:36,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:36,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 08:59:36,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 08:59:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:59:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:36,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682446873] [2020-09-25 08:59:36,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:36,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 08:59:36,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020439878] [2020-09-25 08:59:36,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 08:59:36,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:36,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 08:59:36,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:59:36,826 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 13 states. [2020-09-25 08:59:37,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:37,498 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2020-09-25 08:59:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:59:37,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-09-25 08:59:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:37,502 INFO L225 Difference]: With dead ends: 170 [2020-09-25 08:59:37,503 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 08:59:37,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-09-25 08:59:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 08:59:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2020-09-25 08:59:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 08:59:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2020-09-25 08:59:37,531 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 76 [2020-09-25 08:59:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:37,531 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2020-09-25 08:59:37,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 08:59:37,532 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2020-09-25 08:59:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-25 08:59:37,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:37,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:37,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:59:37,535 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:37,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1586882603, now seen corresponding path program 2 times [2020-09-25 08:59:37,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:37,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27660836] [2020-09-25 08:59:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:37,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:42,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:43,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 08:59:43,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:59:43,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5636 [2020-09-25 08:59:43,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:43,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:59:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 08:59:43,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:43,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:43,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:43,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:43,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:43,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:43,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:43,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:59:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:43,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 08:59:43,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-25 08:59:43,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:43,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 08:59:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:43,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:59:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:43,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:59:43,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:43,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:59:43,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:43,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:43,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:43,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:59:43,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 08:59:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:43,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:59:43,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:59:43,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:43,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:43,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:59:43,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 08:59:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 08:59:43,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:43,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:59:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 08:59:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:59:43,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:59:43,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:43,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:59:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:43,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 08:59:43,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27660836] [2020-09-25 08:59:43,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:43,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:59:43,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239200146] [2020-09-25 08:59:43,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:59:43,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:43,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:59:43,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:59:43,908 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand 9 states. [2020-09-25 08:59:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:44,309 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-09-25 08:59:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:59:44,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-09-25 08:59:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:44,315 INFO L225 Difference]: With dead ends: 154 [2020-09-25 08:59:44,315 INFO L226 Difference]: Without dead ends: 118 [2020-09-25 08:59:44,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:59:44,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-25 08:59:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2020-09-25 08:59:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 08:59:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-09-25 08:59:44,343 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 94 [2020-09-25 08:59:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:44,344 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-09-25 08:59:44,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:59:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-09-25 08:59:44,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 08:59:44,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:44,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:44,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:59:44,353 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:44,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:44,353 INFO L82 PathProgramCache]: Analyzing trace with hash -892358661, now seen corresponding path program 3 times [2020-09-25 08:59:44,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:44,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43010399] [2020-09-25 08:59:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:50,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 08:59:50,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:59:50,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5955 [2020-09-25 08:59:50,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:50,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:59:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 08:59:50,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:50,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:50,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:50,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:50,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:50,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:50,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:59:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:50,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 08:59:50,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-25 08:59:50,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:50,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 08:59:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:59:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:50,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:59:50,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:50,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:59:50,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:50,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:50,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:50,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:50,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 08:59:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:50,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:59:50,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:59:50,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:50,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:59:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 08:59:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:50,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:59:50,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:59:50,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:50,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:50,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 08:59:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:59:50,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:50,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 08:59:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:50,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:50,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:59:50,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:50,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:59:50,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:50,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 08:59:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:50,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 08:59:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:50,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:59:50,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:50,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:59:50,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:50,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:59:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:50,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 08:59:50,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43010399] [2020-09-25 08:59:50,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:50,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:59:50,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891536503] [2020-09-25 08:59:50,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:59:50,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:50,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:59:50,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:59:50,964 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 9 states. [2020-09-25 08:59:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:51,466 INFO L93 Difference]: Finished difference Result 186 states and 201 transitions. [2020-09-25 08:59:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:59:51,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-09-25 08:59:51,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:51,469 INFO L225 Difference]: With dead ends: 186 [2020-09-25 08:59:51,469 INFO L226 Difference]: Without dead ends: 127 [2020-09-25 08:59:51,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:59:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-25 08:59:51,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2020-09-25 08:59:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 08:59:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 08:59:51,508 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 107 [2020-09-25 08:59:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:51,508 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 08:59:51,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:59:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 08:59:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 08:59:51,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:51,514 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:51,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:59:51,517 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:51,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:51,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1090353339, now seen corresponding path program 1 times [2020-09-25 08:59:51,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:51,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340230087] [2020-09-25 08:59:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:51,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:56,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:56,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:56,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 08:59:56,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:59:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 08:59:56,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:56,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-25 08:59:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 08:59:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:57,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:57,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:57,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:57,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:59:57,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:57,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:57,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:57,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:57,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:59:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:58,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:58,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 08:59:58,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:58,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-09-25 08:59:58,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:58,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:58,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 08:59:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:59:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:59,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:59:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:59,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:59,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:59:59,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:59,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 08:59:59,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:59,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:59:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 08:59:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:59,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:59,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:59:59,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 08:59:59,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:59,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:59:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:59:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 08:59:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:59,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 08:59:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:59,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:00,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:00:00,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 09:00:00,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:00,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:00:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:00:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:00,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 09:00:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:00,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:00:00,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 09:00:00,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:00,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:00:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:00:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:01,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 09:00:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:01,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 09:00:01,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 09:00:01,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:01,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:00:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:00:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 09:00:01,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340230087] [2020-09-25 09:00:01,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:01,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-09-25 09:00:01,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105153410] [2020-09-25 09:00:01,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-09-25 09:00:01,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:01,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-09-25 09:00:01,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=2628, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 09:00:01,634 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 53 states. [2020-09-25 09:00:10,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:10,633 INFO L93 Difference]: Finished difference Result 240 states and 276 transitions. [2020-09-25 09:00:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-09-25 09:00:10,634 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 114 [2020-09-25 09:00:10,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:10,638 INFO L225 Difference]: With dead ends: 240 [2020-09-25 09:00:10,639 INFO L226 Difference]: Without dead ends: 237 [2020-09-25 09:00:10,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=623, Invalid=10933, Unknown=0, NotChecked=0, Total=11556 [2020-09-25 09:00:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-25 09:00:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 175. [2020-09-25 09:00:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-25 09:00:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 199 transitions. [2020-09-25 09:00:10,663 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 199 transitions. Word has length 114 [2020-09-25 09:00:10,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:10,663 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 199 transitions. [2020-09-25 09:00:10,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-09-25 09:00:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 199 transitions. [2020-09-25 09:00:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 09:00:10,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:10,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:10,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:00:10,666 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:10,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1584534241, now seen corresponding path program 2 times [2020-09-25 09:00:10,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:10,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650556914] [2020-09-25 09:00:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat