/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=DEEPEST --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/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:59:02,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:59:02,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:59:02,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:59:02,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:59:02,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:59:02,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:59:02,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:59:02,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:59:02,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:59:02,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:59:02,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:59:02,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:59:02,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:59:02,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:59:02,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:59:02,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:59:02,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:59:02,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:59:02,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:59:02,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:59:02,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:59:02,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:59:02,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:59:02,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:59:02,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:59:02,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:59:02,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:59:02,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:59:02,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:59:02,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:59:02,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:59:02,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:59:02,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:59:02,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:59:02,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:59:02,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:59:02,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:59:02,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:59:02,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:59:02,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:59:02,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:59:02,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:59:02,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:59:02,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:59:02,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:59:02,320 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:59:02,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:59:02,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:59:02,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:59:02,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:59:02,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:59:02,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:59:02,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:59:02,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:59:02,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:59:02,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:59:02,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:59:02,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:59:02,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:59:02,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:59:02,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:59:02,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:59:02,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:59:02,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:59:02,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:59:02,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:59:02,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:59:02,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:59:02,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:59:02,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:59:02,325 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:59:02,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:59:02,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:59:02,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:59:02,872 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:59:02,873 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:59:02,874 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 00:59:02,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc909bf30/458e6edbb6904a5f98174a3048f467dc/FLAG5c0c8f037 [2020-09-25 00:59:03,590 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:59:03,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 00:59:03,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc909bf30/458e6edbb6904a5f98174a3048f467dc/FLAG5c0c8f037 [2020-09-25 00:59:03,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc909bf30/458e6edbb6904a5f98174a3048f467dc [2020-09-25 00:59:03,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:59:03,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:59:03,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:59:03,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:59:03,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:59:03,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:59:03" (1/1) ... [2020-09-25 00:59:03,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770ea115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:03, skipping insertion in model container [2020-09-25 00:59:03,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:59:03" (1/1) ... [2020-09-25 00:59:03,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:59:03,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:59:04,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:59:04,433 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:59:04,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:59:04,595 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:59:04,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:04 WrapperNode [2020-09-25 00:59:04,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:59:04,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:59:04,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:59:04,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:59:04,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:04" (1/1) ... [2020-09-25 00:59:04,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:04" (1/1) ... [2020-09-25 00:59:04,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:04" (1/1) ... [2020-09-25 00:59:04,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:04" (1/1) ... [2020-09-25 00:59:04,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:04" (1/1) ... [2020-09-25 00:59:04,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:04" (1/1) ... [2020-09-25 00:59:04,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:04" (1/1) ... [2020-09-25 00:59:04,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:59:04,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:59:04,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:59:04,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:59:04,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:59:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:59:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:59:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 00:59:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 00:59:04,768 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 00:59:04,768 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 00:59:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 00:59:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-09-25 00:59:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 00:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 00:59:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 00:59:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 00:59:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 00:59:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 00:59:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 00:59:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 00:59:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 00:59:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 00:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 00:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 00:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 00:59:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 00:59:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 00:59:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 00:59:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 00:59:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 00:59:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 00:59:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 00:59:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 00:59:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 00:59:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 00:59:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 00:59:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 00:59:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 00:59:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 00:59:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 00:59:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 00:59:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 00:59:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 00:59:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 00:59:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 00:59:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 00:59:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 00:59:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 00:59:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 00:59:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 00:59:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 00:59:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 00:59:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 00:59:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 00:59:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 00:59:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 00:59:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 00:59:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 00:59:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 00:59:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 00:59:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 00:59:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 00:59:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 00:59:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 00:59:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:59:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:59:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 00:59:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:59:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 00:59:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 00:59:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 00:59:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 00:59:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 00:59:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:59:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 00:59:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 00:59:04,796 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 00:59:04,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 00:59:04,798 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 00:59:04,798 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 00:59:04,798 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 00:59:04,798 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 00:59:04,798 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 00:59:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 00:59:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 00:59:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 00:59:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 00:59:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 00:59:04,801 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 00:59:04,801 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 00:59:04,801 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 00:59:04,802 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 00:59:04,802 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 00:59:04,802 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 00:59:04,802 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 00:59:04,803 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 00:59:04,803 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 00:59:04,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 00:59:04,803 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 00:59:04,803 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 00:59:04,803 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 00:59:04,803 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 00:59:04,804 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 00:59:04,804 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 00:59:04,804 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 00:59:04,804 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 00:59:04,804 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 00:59:04,804 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 00:59:04,804 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 00:59:04,804 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 00:59:04,805 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 00:59:04,805 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 00:59:04,805 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 00:59:04,805 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 00:59:04,805 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 00:59:04,805 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 00:59:04,805 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 00:59:04,805 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 00:59:04,806 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 00:59:04,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:59:04,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 00:59:04,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:59:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 00:59:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-09-25 00:59:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 00:59:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:59:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:59:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:59:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 00:59:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:59:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:59:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:59:05,197 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 00:59:05,437 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:59:05,437 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 00:59:05,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:59:05 BoogieIcfgContainer [2020-09-25 00:59:05,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:59:05,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:59:05,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:59:05,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:59:05,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:59:03" (1/3) ... [2020-09-25 00:59:05,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30445c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:59:05, skipping insertion in model container [2020-09-25 00:59:05,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:59:04" (2/3) ... [2020-09-25 00:59:05,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30445c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:59:05, skipping insertion in model container [2020-09-25 00:59:05,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:59:05" (3/3) ... [2020-09-25 00:59:05,452 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-09-25 00:59:05,465 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:59:05,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:59:05,502 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:59:05,542 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:59:05,542 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:59:05,542 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:59:05,543 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:59:05,543 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:59:05,543 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:59:05,543 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:59:05,543 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:59:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-25 00:59:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 00:59:05,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:05,580 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] [2020-09-25 00:59:05,581 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:05,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:05,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-09-25 00:59:05,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:05,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205659847] [2020-09-25 00:59:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:05,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:05,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:06,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:06,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 00:59:06,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:59:06,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-09-25 00:59:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 00:59:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:59:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:06,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:06,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:06,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:06,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:59:06,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:06,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:59:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:06,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:06,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:59:06,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:06,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:59:06,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:06,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:06,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205659847] [2020-09-25 00:59:06,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:06,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:59:06,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822874912] [2020-09-25 00:59:06,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:59:06,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:06,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:59:06,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:59:06,700 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-09-25 00:59:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:06,924 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-25 00:59:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:59:06,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-25 00:59:06,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:06,943 INFO L225 Difference]: With dead ends: 118 [2020-09-25 00:59:06,943 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 00:59:06,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:59:06,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 00:59:07,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-09-25 00:59:07,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 00:59:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-09-25 00:59:07,007 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 27 [2020-09-25 00:59:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:07,008 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-09-25 00:59:07,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:59:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-09-25 00:59:07,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 00:59:07,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:07,010 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] [2020-09-25 00:59:07,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:59:07,011 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1737237332, now seen corresponding path program 1 times [2020-09-25 00:59:07,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:07,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74924228] [2020-09-25 00:59:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:07,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:07,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:07,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:07,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 00:59:07,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:59:07,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-09-25 00:59:07,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:59:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 00:59:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 00:59:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:07,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:07,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:07,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:07,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:59:07,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:07,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:07,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:07,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:07,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:07,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:59:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:07,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:07,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:07,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:59:07,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 00:59:07,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:59:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:59:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:07,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74924228] [2020-09-25 00:59:07,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:07,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 00:59:07,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718654229] [2020-09-25 00:59:07,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:59:07,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:07,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:59:07,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:59:07,975 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 9 states. [2020-09-25 00:59:08,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:08,425 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-09-25 00:59:08,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:59:08,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-25 00:59:08,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:08,428 INFO L225 Difference]: With dead ends: 124 [2020-09-25 00:59:08,428 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 00:59:08,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:59:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 00:59:08,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2020-09-25 00:59:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 00:59:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-25 00:59:08,449 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 27 [2020-09-25 00:59:08,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:08,449 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-25 00:59:08,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:59:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-25 00:59:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 00:59:08,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:08,452 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] [2020-09-25 00:59:08,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:59:08,452 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:08,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:08,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1632096868, now seen corresponding path program 1 times [2020-09-25 00:59:08,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:08,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682946766] [2020-09-25 00:59:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:08,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:08,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:08,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:09,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:09,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:59:09,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:59:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-09-25 00:59:09,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:59:09,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:59:09,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:59:09,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:09,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:09,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:09,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:09,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:09,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:59:09,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:09,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:59:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:09,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:09,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:59:09,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 00:59:09,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:59:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:59:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:09,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682946766] [2020-09-25 00:59:09,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:09,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:59:09,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350964727] [2020-09-25 00:59:09,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:59:09,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:09,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:59:09,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:59:09,517 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 8 states. [2020-09-25 00:59:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:09,844 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-09-25 00:59:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:59:09,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-09-25 00:59:09,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:09,847 INFO L225 Difference]: With dead ends: 104 [2020-09-25 00:59:09,847 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 00:59:09,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:59:09,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 00:59:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2020-09-25 00:59:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 00:59:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-25 00:59:09,858 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 39 [2020-09-25 00:59:09,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:09,858 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-25 00:59:09,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:59:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-25 00:59:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 00:59:09,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:09,861 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] [2020-09-25 00:59:09,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:59:09,861 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:09,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1675692718, now seen corresponding path program 1 times [2020-09-25 00:59:09,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:09,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822718790] [2020-09-25 00:59:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:10,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:14,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:14,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 00:59:14,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:59:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 00:59:14,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:59:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 00:59:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 00:59:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:59:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:14,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:14,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:14,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:14,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:14,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:59:14,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:15,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:59:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:15,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:15,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:59:15,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:15,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 00:59:15,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:15,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:15,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:15,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:15,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 00:59:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:15,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 00:59:15,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 00:59:15,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:59:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:59:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 00:59:15,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822718790] [2020-09-25 00:59:15,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:15,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 00:59:15,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521443973] [2020-09-25 00:59:15,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:59:15,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:15,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:59:15,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:59:15,239 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 10 states. [2020-09-25 00:59:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:15,813 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-09-25 00:59:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:59:15,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-09-25 00:59:15,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:15,815 INFO L225 Difference]: With dead ends: 99 [2020-09-25 00:59:15,816 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 00:59:15,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:59:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 00:59:15,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 76. [2020-09-25 00:59:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 00:59:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-09-25 00:59:15,834 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 57 [2020-09-25 00:59:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:15,836 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-09-25 00:59:15,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:59:15,836 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-09-25 00:59:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 00:59:15,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:15,839 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] [2020-09-25 00:59:15,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:59:15,842 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:15,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:15,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2027225329, now seen corresponding path program 1 times [2020-09-25 00:59:15,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:15,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461072498] [2020-09-25 00:59:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:16,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:19,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:19,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:20,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:20,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:59:20,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:59:20,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 00:59:20,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:59:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 00:59:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 00:59:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:21,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:21,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:21,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:21,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:59:21,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:59:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:21,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:21,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:21,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:59:21,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 00:59:21,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:59:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:59:21,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:21,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 00:59:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:21,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:21,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:21,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:59:21,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 00:59:21,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:59:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 00:59:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:59:21,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:59:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:21,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461072498] [2020-09-25 00:59:21,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:21,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 00:59:22,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113534168] [2020-09-25 00:59:22,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 00:59:22,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:22,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 00:59:22,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-09-25 00:59:22,001 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 18 states. [2020-09-25 00:59:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:23,115 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-09-25 00:59:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 00:59:23,116 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-09-25 00:59:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:23,120 INFO L225 Difference]: With dead ends: 108 [2020-09-25 00:59:23,120 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 00:59:23,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 00:59:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 00:59:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2020-09-25 00:59:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 00:59:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2020-09-25 00:59:23,141 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 58 [2020-09-25 00:59:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:23,142 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2020-09-25 00:59:23,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 00:59:23,142 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2020-09-25 00:59:23,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 00:59:23,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:23,145 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:59:23,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:59:23,145 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:23,146 INFO L82 PathProgramCache]: Analyzing trace with hash -576246568, now seen corresponding path program 1 times [2020-09-25 00:59:23,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:23,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823287913] [2020-09-25 00:59:23,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:23,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:24,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:24,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 00:59:24,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-09-25 00:59:24,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:59:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:59:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 00:59:24,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:24,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:24,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:24,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:59:24,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:24,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:24,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:59:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:24,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:24,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:59:24,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 00:59:24,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:59:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:59:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:24,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 00:59:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:24,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:24,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:24,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:59:24,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:24,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 00:59:24,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:59:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:59:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:24,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823287913] [2020-09-25 00:59:24,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:24,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:59:24,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387565261] [2020-09-25 00:59:24,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:59:24,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:24,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:59:24,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:59:24,884 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand 13 states. [2020-09-25 00:59:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:25,434 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-09-25 00:59:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:59:25,435 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-09-25 00:59:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:25,438 INFO L225 Difference]: With dead ends: 108 [2020-09-25 00:59:25,438 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 00:59:25,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2020-09-25 00:59:25,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 00:59:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2020-09-25 00:59:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 00:59:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 00:59:25,463 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 71 [2020-09-25 00:59:25,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:25,463 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 00:59:25,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:59:25,464 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 00:59:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 00:59:25,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:25,465 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:59:25,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:59:25,466 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:25,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:25,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1080115579, now seen corresponding path program 1 times [2020-09-25 00:59:25,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:25,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473800235] [2020-09-25 00:59:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:26,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:26,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 00:59:26,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:26,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-09-25 00:59:26,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:59:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:59:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 00:59:26,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:26,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:26,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:59:26,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:26,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:59:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:26,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:26,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:26,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:59:26,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 00:59:26,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:59:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:59:26,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:26,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 00:59:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:26,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:26,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 00:59:26,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 00:59:26,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:59:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:59:26,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:26,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 00:59:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:26,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:26,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:59:26,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:26,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 00:59:26,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:26,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:26,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 00:59:26,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:26,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 00:59:26,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473800235] [2020-09-25 00:59:26,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:26,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:59:26,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266966482] [2020-09-25 00:59:26,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:59:26,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:26,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:59:26,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:59:26,809 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 13 states. [2020-09-25 00:59:27,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:27,195 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2020-09-25 00:59:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:59:27,196 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-09-25 00:59:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:27,197 INFO L225 Difference]: With dead ends: 141 [2020-09-25 00:59:27,197 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 00:59:27,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-09-25 00:59:27,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 00:59:27,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2020-09-25 00:59:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 00:59:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-09-25 00:59:27,220 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 76 [2020-09-25 00:59:27,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:27,220 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-09-25 00:59:27,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:59:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-09-25 00:59:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 00:59:27,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:27,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:59:27,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:59:27,224 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:27,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:27,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1382895989, now seen corresponding path program 2 times [2020-09-25 00:59:27,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:27,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108398077] [2020-09-25 00:59:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:27,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:27,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:29,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:30,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:32,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:32,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 00:59:32,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:59:32,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 00:59:32,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 00:59:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 00:59:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 00:59:32,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:32,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:32,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:32,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:32,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:59:32,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:32,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:59:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:32,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:32,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:34,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 00:59:34,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:59:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1964 [2020-09-25 00:59:34,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:59:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 00:59:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 00:59:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:34,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 00:59:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:34,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:34,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:34,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 00:59:34,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:34,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 00:59:34,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:59:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 00:59:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 00:59:34,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:34,881 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-09-25 00:59:35,114 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-09-25 00:59:35,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 00:59:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:35,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:35,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:35,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:59:35,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:35,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 00:59:35,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:59:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 00:59:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:59:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 00:59:35,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108398077] [2020-09-25 00:59:35,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:35,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 00:59:35,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108159678] [2020-09-25 00:59:35,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 00:59:35,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:35,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 00:59:35,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:59:35,719 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 17 states. [2020-09-25 00:59:36,344 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-09-25 00:59:36,559 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-25 00:59:36,749 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-09-25 00:59:37,078 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-09-25 00:59:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:37,528 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-09-25 00:59:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 00:59:37,529 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2020-09-25 00:59:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:37,530 INFO L225 Difference]: With dead ends: 139 [2020-09-25 00:59:37,530 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 00:59:37,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2020-09-25 00:59:37,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 00:59:37,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-25 00:59:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 00:59:37,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-09-25 00:59:37,546 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 88 [2020-09-25 00:59:37,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:37,550 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-09-25 00:59:37,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 00:59:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-09-25 00:59:37,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 00:59:37,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:37,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:59:37,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:59:37,555 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:37,556 INFO L82 PathProgramCache]: Analyzing trace with hash 131916194, now seen corresponding path program 1 times [2020-09-25 00:59:37,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:37,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660177579] [2020-09-25 00:59:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:37,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:37,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:38,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:42,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:42,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 00:59:42,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:59:42,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5269 [2020-09-25 00:59:42,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:59:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 00:59:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:59:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:42,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:42,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:42,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:42,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:59:42,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:42,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:42,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:59:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:43,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:43,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:46,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:46,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:59:46,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:59:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3616 [2020-09-25 00:59:46,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:59:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:59:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 00:59:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:46,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:47,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:47,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 00:59:47,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 00:59:47,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:59:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 00:59:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 00:59:47,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:47,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 00:59:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:47,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:47,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:59:47,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 00:59:47,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 00:59:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 00:59:47,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660177579] [2020-09-25 00:59:47,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:47,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 00:59:47,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505602818] [2020-09-25 00:59:47,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 00:59:47,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:47,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 00:59:47,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:59:47,335 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 19 states. [2020-09-25 00:59:48,118 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-09-25 00:59:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:49,193 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-09-25 00:59:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 00:59:49,194 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-09-25 00:59:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:49,195 INFO L225 Difference]: With dead ends: 121 [2020-09-25 00:59:49,195 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 00:59:49,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 00:59:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 00:59:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-09-25 00:59:49,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 00:59:49,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2020-09-25 00:59:49,203 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 89 [2020-09-25 00:59:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:49,204 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2020-09-25 00:59:49,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 00:59:49,204 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2020-09-25 00:59:49,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 00:59:49,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:49,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:59:49,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:59:49,206 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:49,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1167974453, now seen corresponding path program 2 times [2020-09-25 00:59:49,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:49,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775190074] [2020-09-25 00:59:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:49,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking...