/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=LOWLEXORDER --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 [2020-09-24 21:38:28,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:38:28,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:38:28,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:38:28,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:38:28,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:38:28,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:38:28,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:38:28,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:38:28,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:38:28,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:38:28,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:38:28,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:38:28,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:38:28,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:38:28,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:38:28,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:38:28,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:38:28,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:38:28,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:38:28,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:38:28,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:38:28,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:38:28,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:38:28,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:38:28,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:38:28,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:38:28,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:38:28,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:38:28,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:38:28,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:38:28,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:38:28,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:38:28,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:38:28,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:38:28,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:38:28,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:38:28,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:38:28,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:38:28,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:38:28,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:38:28,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:38:28,333 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:38:28,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:38:28,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:38:28,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:38:28,335 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:38:28,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:38:28,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:38:28,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:38:28,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:38:28,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:38:28,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:38:28,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:38:28,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:38:28,337 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:38:28,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:38:28,337 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:38:28,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:38:28,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:38:28,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:38:28,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:38:28,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:38:28,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:38:28,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:38:28,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:38:28,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:38:28,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:38:28,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:38:28,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:38:28,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:38:28,340 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:38:28,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:38:28,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:38:28,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:38:28,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:38:28,874 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:38:28,875 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-24 21:38:28,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac98c3fc/211cea5632c54bc38a66429e5ca683b6/FLAG9e49a0a66 [2020-09-24 21:38:29,634 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:38:29,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-24 21:38:29,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac98c3fc/211cea5632c54bc38a66429e5ca683b6/FLAG9e49a0a66 [2020-09-24 21:38:29,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac98c3fc/211cea5632c54bc38a66429e5ca683b6 [2020-09-24 21:38:29,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:38:29,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:38:29,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:29,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:38:29,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:38:29,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:29" (1/1) ... [2020-09-24 21:38:29,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67208b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:29, skipping insertion in model container [2020-09-24 21:38:29,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:29" (1/1) ... [2020-09-24 21:38:29,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:38:29,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:38:30,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:30,455 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:38:30,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:30,589 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:38:30,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:30 WrapperNode [2020-09-24 21:38:30,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:30,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:38:30,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:38:30,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:38:30,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:30" (1/1) ... [2020-09-24 21:38:30,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:30" (1/1) ... [2020-09-24 21:38:30,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:30" (1/1) ... [2020-09-24 21:38:30,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:30" (1/1) ... [2020-09-24 21:38:30,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:30" (1/1) ... [2020-09-24 21:38:30,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:30" (1/1) ... [2020-09-24 21:38:30,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:30" (1/1) ... [2020-09-24 21:38:30,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:38:30,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:38:30,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:38:30,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:38:30,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:38:30,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:38:30,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:38:30,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 21:38:30,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 21:38:30,758 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 21:38:30,758 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-24 21:38:30,758 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-24 21:38:30,758 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-24 21:38:30,759 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-24 21:38:30,759 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-24 21:38:30,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:38:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:38:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 21:38:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 21:38:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 21:38:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 21:38:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 21:38:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 21:38:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 21:38:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 21:38:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 21:38:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 21:38:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 21:38:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 21:38:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 21:38:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 21:38:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 21:38:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 21:38:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 21:38:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 21:38:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 21:38:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 21:38:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 21:38:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 21:38:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 21:38:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 21:38:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 21:38:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 21:38:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 21:38:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 21:38:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 21:38:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 21:38:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 21:38:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 21:38:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 21:38:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 21:38:30,766 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 21:38:30,766 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 21:38:30,766 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 21:38:30,766 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 21:38:30,766 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 21:38:30,767 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 21:38:30,767 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 21:38:30,767 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 21:38:30,767 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 21:38:30,767 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 21:38:30,767 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 21:38:30,767 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 21:38:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 21:38:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 21:38:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 21:38:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 21:38:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 21:38:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 21:38:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:38:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 21:38:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 21:38:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:38:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 21:38:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 21:38:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 21:38:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 21:38:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 21:38:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:38:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 21:38:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 21:38:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 21:38:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:38:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 21:38:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 21:38:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 21:38:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 21:38:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 21:38:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 21:38:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 21:38:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 21:38:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 21:38:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 21:38:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 21:38:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 21:38:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 21:38:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 21:38:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 21:38:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 21:38:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 21:38:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 21:38:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 21:38:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 21:38:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 21:38:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 21:38:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 21:38:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 21:38:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 21:38:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 21:38:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 21:38:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 21:38:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 21:38:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 21:38:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 21:38:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 21:38:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 21:38:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 21:38:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 21:38:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 21:38:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 21:38:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 21:38:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 21:38:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 21:38:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-24 21:38:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:38:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:38:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:38:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-24 21:38:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-24 21:38:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:38:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:38:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-24 21:38:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:38:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-24 21:38:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:38:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:38:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:38:31,219 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 21:38:31,367 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:38:31,367 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 21:38:31,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:31 BoogieIcfgContainer [2020-09-24 21:38:31,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:38:31,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:38:31,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:38:31,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:38:31,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:38:29" (1/3) ... [2020-09-24 21:38:31,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c6999e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:31, skipping insertion in model container [2020-09-24 21:38:31,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:30" (2/3) ... [2020-09-24 21:38:31,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c6999e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:31, skipping insertion in model container [2020-09-24 21:38:31,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:31" (3/3) ... [2020-09-24 21:38:31,383 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-24 21:38:31,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:38:31,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:38:31,429 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:38:31,462 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:38:31,462 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:38:31,462 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:38:31,463 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:38:31,463 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:38:31,463 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:38:31,463 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:38:31,463 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:38:31,490 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-24 21:38:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 21:38:31,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:31,503 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] [2020-09-24 21:38:31,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:31,512 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-24 21:38:31,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:31,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942277782] [2020-09-24 21:38:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:31,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:32,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:32,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 21:38:32,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:38:32,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-09-24 21:38:32,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:38:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:38:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:38:32,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:32,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:32,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:32,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:32,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:32,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:38:32,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:32,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:32,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:38:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:32,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:32,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:32,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:38:32,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:32,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 21:38:32,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:38:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:38:32,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 21:38:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:32,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:32,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:38:32,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:32,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:38:32,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 21:38:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:32,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942277782] [2020-09-24 21:38:32,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:32,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:38:32,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200761068] [2020-09-24 21:38:32,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:38:32,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:32,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:38:32,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:32,794 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 6 states. [2020-09-24 21:38:33,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:33,457 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2020-09-24 21:38:33,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:38:33,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-24 21:38:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:33,476 INFO L225 Difference]: With dead ends: 242 [2020-09-24 21:38:33,476 INFO L226 Difference]: Without dead ends: 144 [2020-09-24 21:38:33,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:38:33,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-24 21:38:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-09-24 21:38:33,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 21:38:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-09-24 21:38:33,549 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-09-24 21:38:33,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:33,550 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-09-24 21:38:33,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:38:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-09-24 21:38:33,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:38:33,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:33,553 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] [2020-09-24 21:38:33,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:38:33,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:33,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:33,554 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-09-24 21:38:33,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:33,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136340222] [2020-09-24 21:38:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:33,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:33,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:33,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:35,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:38,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:38,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 21:38:38,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:38:38,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:38:38,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:38:38,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 21:38:38,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:38,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:38,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:38,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:38,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:38:38,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:38,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:38:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:38,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:38,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:38:38,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:38,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 21:38:38,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:38:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:38:38,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:38,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 21:38:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:38,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:38,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:38:38,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:38,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:38:38,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:38:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:38,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 21:38:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:38,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:38,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:38:38,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:38,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:38:38,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:38:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:38:38,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136340222] [2020-09-24 21:38:38,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:38,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:38:38,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609180127] [2020-09-24 21:38:38,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:38:38,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:38,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:38:38,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:38:38,805 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 8 states. [2020-09-24 21:38:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:39,246 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2020-09-24 21:38:39,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:38:39,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 21:38:39,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:39,250 INFO L225 Difference]: With dead ends: 147 [2020-09-24 21:38:39,250 INFO L226 Difference]: Without dead ends: 93 [2020-09-24 21:38:39,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:38:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-24 21:38:39,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-09-24 21:38:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 21:38:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-24 21:38:39,278 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 51 [2020-09-24 21:38:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:39,279 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-24 21:38:39,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:38:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-24 21:38:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 21:38:39,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:39,284 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] [2020-09-24 21:38:39,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:38:39,286 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:39,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1957255427, now seen corresponding path program 1 times [2020-09-24 21:38:39,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:39,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064558441] [2020-09-24 21:38:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:39,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:39,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:39,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:44,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:44,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 21:38:44,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:38:44,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:38:44,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:38:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:38:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:44,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:44,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:44,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:44,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:44,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:44,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:44,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:44,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:44,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:44,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:44,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:44,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:38:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:44,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:44,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:44,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:38:44,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:44,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-24 21:38:44,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:38:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:38:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:38:44,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:44,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 21:38:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:44,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:44,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:38:44,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 21:38:44,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:38:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:38:44,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 21:38:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:44,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:44,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:44,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:38:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:38:44,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:38:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:44,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:44,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 21:38:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:44,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:44,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:38:44,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:44,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:38:44,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:38:44,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:44,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:38:44,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064558441] [2020-09-24 21:38:44,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:44,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:38:44,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139809265] [2020-09-24 21:38:44,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:38:44,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:44,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:38:44,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:38:44,812 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 10 states. [2020-09-24 21:38:45,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:45,295 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-09-24 21:38:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:38:45,296 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-24 21:38:45,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:45,297 INFO L225 Difference]: With dead ends: 156 [2020-09-24 21:38:45,298 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 21:38:45,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:38:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 21:38:45,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2020-09-24 21:38:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 21:38:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2020-09-24 21:38:45,322 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 69 [2020-09-24 21:38:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:45,322 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2020-09-24 21:38:45,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:38:45,323 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2020-09-24 21:38:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 21:38:45,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:45,328 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] [2020-09-24 21:38:45,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:38:45,329 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:45,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:45,329 INFO L82 PathProgramCache]: Analyzing trace with hash -564957999, now seen corresponding path program 2 times [2020-09-24 21:38:45,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:45,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754936452] [2020-09-24 21:38:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:45,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:47,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:48,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:50,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:50,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:38:50,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:38:50,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:38:50,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:38:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:38:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:50,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:50,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:50,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:50,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:38:50,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:50,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:38:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:50,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:50,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:50,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:38:50,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:50,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-24 21:38:50,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:38:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:38:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:50,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 21:38:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:50,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:50,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:50,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:38:50,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:38:50,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:38:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:38:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:50,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 21:38:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:50,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:50,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:38:50,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:50,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:38:50,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:38:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:38:50,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:50,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 21:38:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:50,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:50,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:50,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:38:50,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:50,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:38:50,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 21:38:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:38:50,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:51,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 21:38:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:51,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:51,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:51,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:38:51,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:51,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:51,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:51,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:51,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:38:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:51,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 21:38:51,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754936452] [2020-09-24 21:38:51,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:51,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:38:51,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281684254] [2020-09-24 21:38:51,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:38:51,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:51,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:38:51,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:38:51,053 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand 13 states. [2020-09-24 21:38:51,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:51,804 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2020-09-24 21:38:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:38:51,804 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-09-24 21:38:51,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:51,806 INFO L225 Difference]: With dead ends: 165 [2020-09-24 21:38:51,807 INFO L226 Difference]: Without dead ends: 119 [2020-09-24 21:38:51,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2020-09-24 21:38:51,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-24 21:38:51,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2020-09-24 21:38:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 21:38:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2020-09-24 21:38:51,824 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 87 [2020-09-24 21:38:51,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:51,824 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2020-09-24 21:38:51,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:38:51,825 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2020-09-24 21:38:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 21:38:51,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:51,827 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] [2020-09-24 21:38:51,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:38:51,827 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1526680859, now seen corresponding path program 1 times [2020-09-24 21:38:51,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:51,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176652881] [2020-09-24 21:38:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:54,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:56,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:57,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:57,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 21:38:57,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:38:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5388 [2020-09-24 21:38:57,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:38:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:38:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:57,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:57,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:57,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:57,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:38:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:57,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:57,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:38:57,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:57,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-24 21:38:57,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:38:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:38:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:57,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 21:38:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:57,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:57,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:57,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:38:57,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:57,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 21:38:57,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:57,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:38:57,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:57,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:38:57,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:57,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 21:38:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:57,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:57,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:38:57,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 21:38:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:38:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:38:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 21:38:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:57,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:57,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:38:57,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 21:38:57,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:38:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:58,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 21:38:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:58,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:58,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:58,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:38:58,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:58,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:58,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:58,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:58,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:38:58,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:58,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 21:38:58,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176652881] [2020-09-24 21:38:58,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:58,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:38:58,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809798392] [2020-09-24 21:38:58,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:38:58,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:58,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:38:58,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:38:58,063 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand 15 states. [2020-09-24 21:38:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:59,036 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2020-09-24 21:38:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:38:59,037 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 94 [2020-09-24 21:38:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:59,039 INFO L225 Difference]: With dead ends: 162 [2020-09-24 21:38:59,039 INFO L226 Difference]: Without dead ends: 132 [2020-09-24 21:38:59,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2020-09-24 21:38:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-24 21:38:59,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2020-09-24 21:38:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-24 21:38:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2020-09-24 21:38:59,050 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 94 [2020-09-24 21:38:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:59,051 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2020-09-24 21:38:59,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:38:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2020-09-24 21:38:59,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 21:38:59,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:59,053 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] [2020-09-24 21:38:59,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:38:59,053 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:59,053 INFO L82 PathProgramCache]: Analyzing trace with hash 70810465, now seen corresponding path program 2 times [2020-09-24 21:38:59,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:59,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219558912] [2020-09-24 21:38:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:59,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:59,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:04,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 21:39:04,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:39:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:39:04,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:04,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:39:04,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 21:39:04,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:04,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:04,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:39:04,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:39:04,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:39:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:39:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:04,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:39:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:04,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:04,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:39:04,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-24 21:39:04,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:39:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:39:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 21:39:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:04,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:39:04,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:39:04,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:39:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:39:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:04,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 21:39:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:04,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:04,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:39:04,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:04,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:39:04,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:04,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:39:04,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:04,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:39:04,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:04,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 21:39:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:04,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:04,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:39:04,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:39:04,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:39:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:04,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 21:39:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:04,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:39:04,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:39:04,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:39:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:39:04,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 21:39:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:04,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:39:04,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:04,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:39:04,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:39:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:39:04,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:39:04,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 21:39:04,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219558912] [2020-09-24 21:39:04,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:04,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:39:04,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195228949] [2020-09-24 21:39:04,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:39:04,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:04,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:39:04,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:39:04,768 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand 13 states. [2020-09-24 21:39:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:05,602 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-09-24 21:39:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:39:05,604 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 107 [2020-09-24 21:39:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:05,607 INFO L225 Difference]: With dead ends: 159 [2020-09-24 21:39:05,607 INFO L226 Difference]: Without dead ends: 133 [2020-09-24 21:39:05,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:39:05,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-24 21:39:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 118. [2020-09-24 21:39:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-24 21:39:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2020-09-24 21:39:05,619 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 107 [2020-09-24 21:39:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:05,619 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2020-09-24 21:39:05,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:39:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2020-09-24 21:39:05,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 21:39:05,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:05,621 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] [2020-09-24 21:39:05,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:39:05,622 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:05,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:05,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1090353339, now seen corresponding path program 1 times [2020-09-24 21:39:05,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:05,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869999573] [2020-09-24 21:39:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:08,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:08,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:10,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:10,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 21:39:10,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:39:10,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-24 21:39:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-24 21:39:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:39:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:39:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:11,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:11,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:11,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:11,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:39:11,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:11,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:39:11,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:39:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:39:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:11,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:39:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:12,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:12,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:39:12,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:12,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1438 [2020-09-24 21:39:12,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 21:39:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:12,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:39:12,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:13,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 21:39:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:13,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:13,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:13,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:39:13,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:13,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 21:39:13,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:39:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:39:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:13,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 21:39:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:13,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:13,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:39:13,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:13,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 21:39:13,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:39:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:39:13,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:13,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 21:39:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking...